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 Maybe User A is seeing User B's data, prices are wrong, order statuses are outdated, or the content displayed doesn't match what's actually in the database.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Even if it's "just" wrong numbers or outdated information, it destroys user trust.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.
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
Jacek Rozanski
Senior PHP/Symfony developer and DevOps engineer with 20+ years of professional experience, running opcode.pl (web development agency, est. 2004).
Day job: I'm the sole backend developer at merketing company where I own and maintain 11 PHP/Symfony microservices on AWS (ECS Fargate, RDS, S3, CloudFront), handle the full CI/CD pipeline (Bitbucket Pipelines, Docker), and manage monitoring with Sentry and CloudWatch. These services handle high request volumes in production every month.
What I bring to AI-built apps:
- I audit and fix security issues (OWASP methodology), performance bottlenecks, and architectural problems in codebases generated by Cursor, Claude Code, Lovable, Bolt, and v0
- I refactor AI-generated prototypes into production-grade applications with proper error handling, testing, and clean architecture (SOLID, DDD, hexagonal architecture)
- I set up the infrastructure AI tools don't touch: AWS hosting, CI/CD pipelines, automated deployments, database optimization, monitoring, and alerting
- I integrate external services: payment providers, email systems, partner APIs, SSO/auth
Tech stack: PHP 8.x, Symfony, React, Next.js, PostgreSQL, MySQL, Docker, AWS (ECS, RDS, S3, SQS/SNS, CloudFront), Terraform, Supabase. I also use AI tools daily (Claude Code, Cursor) in my own workflow, so I understand both the strengths and the gaps in AI-generated code.
Based in Poland (CET timezone). Available for async work and calls during EU/US business hours.
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.
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
PawelPloszaj
I'm fronted developer with 10+ years of experience with big projects. I have small backend background too
Krishna Sai Kuncha
Experienced Professional Full stack Developer with 8+ years of experience across react, python, js, ts, golang and react-native. Developed inhouse websearch tooling for AI before websearch was solved : )
Anthony Akpan
Developer with 8 years of experience building softwares fro startups
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.
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
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
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.