Common Issues
data
My App Is Showing Wrong Data to Users
Your app is showing users the wrong information. Maybe User A is seeing User B's data, prices are wrong, order statuses are outdated, or the content displayed doesn't match what's actually in the database. This is confusing at best and a serious privacy violation at worst.
If one user can see another user's personal information, orders, or account details, you have a critical security and legal problem on top of a technical one. This needs to be fixed immediately.
Even if it's "just" wrong numbers or outdated information, it destroys user trust. People won't use an app they can't trust to show them accurate information, especially when money is involved.
Error Messages You Might See
No error message — just incorrect data displayed
Users reporting seeing other people's information
Prices don't match what was advertised
Order status stuck on old value
Dashboard numbers don't add up
Common Causes
- No data filtering by user — The app loads all data from the database instead of only the current user's data
- Caching showing stale data — The app saved an old version of the data and keeps showing it instead of fetching fresh data
- Data loaded in wrong order — The page displays before the data finishes loading, showing old or default values
- Database queries missing filters — The code that fetches data doesn't include a WHERE clause to filter by the current user
- Timezone or currency conversion errors — Dates, times, or prices are being converted incorrectly for different regions
How to Fix It
- Check if users can see each other's data — Log in as two different test users and verify each one only sees their own data. This is your highest priority
- Clear all caches — If your app caches data, clear the cache and see if the correct data appears
- Check the database directly — Open your database and verify that the actual stored data is correct. The problem might be in the display, not the data itself
- Add Row Level Security — If using Supabase, enable RLS policies so the database itself prevents users from accessing other users' data
- Test with fresh data — Create a brand new test account and add fresh data to see if it displays correctly
Real developers can help you.
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
BurnHavoc
Been around fixing other peoples code for 20 years.
hanson1014
Full-stack developer experienced in fixing and deploying AI-generated apps from Lovable, Bolt.new, Cursor, and Replit. I specialize in debugging Supabase integration issues (auth flows, RLS policies, database connections), fixing broken deployments, resolving routing/blank screen problems, and cleaning up messy React/Vite codebases. I also build production apps with the Claude API and have shipped a Mac desktop dev tool (Nexterm from scratch. Based in Hong Kong, fast turnaround.
Taufan
I’m a product-focused engineer and tech leader who builds scalable systems and turns ideas into production-ready platforms.
Over the past years, I’ve worked across startups and fast-moving teams, leading backend architecture, improving system reliability, and shipping products used by thousands of users. My strength is not just writing code — but connecting product vision, technical execution, and business impact.
Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture.
I played a key role in creating a scalable and maintainable platform to support educators and learners globally.
I'm enthusiastic about embracing new challenges and making meaningful contributions.
Caio Rodrigues
I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures.
I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations.
Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization.
I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems.
My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.**
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
My expertise lies in the critical backend infrastructure: the parts that must be fast, secure, and scalable. I thrive on high-pressure environments, such as when I had only three weeks to architect and launch an Ethereum redemption system with minimal prior crypto knowledge, turning it into a major revenue stream.
What I bring to your project:
Forensic Debugging: I don't just "patch" bugs; I use tools like Datadog and Explain Analyzers to map out bottlenecks and resolve root causes—like significantly reducing memory usage by optimizing complex DB joins.
Full-Stack Context: Deep experience in Node.js and React, ensuring backends play perfectly with mobile and web teams.
Sanity in the Age of AI: I bridge the gap between "best practices" and modern speed, ensuring your project isn't just built fast, but built to last.
Victor Denisov
Developer
Describe what's wrong in plain English. No technical knowledge needed.
Get HelpFrequently Asked Questions
Is it illegal if users can see each other's data?
Yes, this is likely a violation of privacy laws like GDPR (Europe), CCPA (California), or other regional data protection regulations. If personal data was exposed, you may be required to notify affected users and potentially regulators. Fix this immediately.
My data looks correct in the database but wrong in the app. Why?
This means the problem is in how your app reads or displays the data, not in the data itself. Common causes include caching, timezone conversion, wrong database queries, or the app showing data before it finishes loading.