Common Issues general

My App Was Working Yesterday and Now It's Completely Down

Your app was running perfectly fine — maybe for days, weeks, or even months. Then suddenly, without you changing anything, it stopped working. Users are seeing errors, the page won't load, or features that worked yesterday are now broken.

This is terrifying, especially if you have paying customers or an important demo coming up. You didn't touch anything, so why did it break? The answer is usually that something in the background changed — a subscription expired, a service went down, or an automatic update broke something.

The key is to figure out what changed and fix it as quickly as possible. Most sudden outages have simple causes once you know where to look.

Error Messages You Might See

503 Service Unavailable 500 Internal Server Error This site's security certificate has expired ERR_CERT_DATE_INVALID Database connection limit reached Account suspended
503 Service Unavailable500 Internal Server ErrorThis site's security certificate has expiredERR_CERT_DATE_INVALIDDatabase connection limit reachedAccount suspended

Common Causes

  • Hosting subscription expired — Your free trial or paid plan ended and the hosting provider took your app offline
  • Database hit its limit — Your database ran out of free storage or connections and stopped accepting requests
  • API key expired or was revoked — A third-party service you depend on (payments, email, maps) changed or expired your access key
  • SSL certificate expired — Your site's security certificate ran out and browsers now block the page entirely
  • Automatic updates broke something — A library or dependency auto-updated to a version that's not compatible with your code
  • The service your app depends on went down — If Supabase, Firebase, Vercel, or another service has an outage, your app goes down too

How to Fix It

  1. Check your hosting platform first — Log in and see if there are any warnings, billing issues, or outage notices
  2. Check third-party service status — Visit the status pages of services you use (Supabase status, Vercel status, Stripe status, etc.)
  3. Look at billing and subscriptions — Check if any free trials expired or credit cards were declined
  4. Check your domain and SSL — Make sure your domain is still connected and the SSL certificate hasn't expired
  5. Look at error messages — Open the app and note any error codes (500, 503, etc.) to help identify the problem
  6. Redeploy the app — Sometimes simply redeploying from your hosting dashboard fixes temporary issues

Real developers can help you.

rayush33 rayush33 JavaScript (React.js, React Native, Node.js) Developer with demonstrated industry experience of 4+ years, actively looking for opportunities to hone my skills as well as help small-scale business owners with solutions to technical problems David Olverson David Olverson Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production. ISHANTDEEP SINGH ISHANTDEEP SINGH Senior Software Engineer with 7+ years of experience in React, JavaScript, TypeScript, Next.js, and Node.js. I’ve also worked as a tech lead for startups, owning end-to-end technical execution including architecture, development, scaling, and delivery. I bring a strong mix of hands-on coding, product thinking, and technical leadership, and I’m comfortable building products from scratch as well as improving and scaling existing systems. Simon A. Simon A. I'm a backend developer building APIs, emulators, and interactive game systems. Professionally, I've developed Java/Spring reporting solutions, managed relational and NoSQL databases, and implemented CI/CD workflows. Omar Faruk 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. Antriksh Narang Antriksh Narang 5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies. MFox MFox Full-stack professional senior engineer (15+years). Extensive experience in software development, qa, and IP networking. Jared Hasson Jared Hasson Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever prajwalfullstack prajwalfullstack Hi Im a full stack developer, a vibe coded MVP to Market ready product, I'm here to help Taufan 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.

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Frequently Asked Questions

I didn't change anything, so why did it break?

Many things can change without you doing anything: hosting subscriptions expire, database storage fills up, SSL certificates expire, or services you depend on have their own outages. Regular maintenance prevents most of these surprises.

How can I prevent this from happening again?

Set up uptime monitoring (free tools like UptimeRobot will alert you immediately), keep track of when subscriptions renew, and make sure payment methods on all services are up to date.

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