Why Users Can't Log In to Your AI-Built App
Your AI-built app signs you in fine, so you ship it — then real users report the login button does nothing, sign-up throws an error, or they get bounced back to the login screen in a loop. Broken authentication is one of the most revenue-critical failures an AI-built app can have, because a user who can't sign in never becomes a customer.
The Login Wall: Why Auth Breaks in Production
When login works for you but not for your users, the problem is almost never your core app logic — it's the authentication configuration between environments. The most common causes: OAuth redirect and callback URLs still point at localhost instead of your production domain; the auth provider's client ID and secret are missing or mismatched because the environment variables didn't carry over to production; cookie and session settings (SameSite, Secure) block the session over HTTPS or across subdomains; CORS rejects the auth request from your deployed origin; or the email/SMTP step for verification and password reset was never actually wired up. Any one of these lets you in — because you're already authenticated locally — while every new user hits a wall.
The Silent-Fail Pattern: It Works for You, Not for Them
Auth failures are deceptive because they rarely throw an obvious error where you'd see it. The login button appears to do nothing, the page redirects back to itself in a loop, or the session silently drops on the next refresh. "It works on my machine" is the trap: your browser already holds a valid session, your local config has the right keys, and you never test the cold sign-up path a real user takes. Sign-up succeeds but the confirmation email never sends; password reset links 404; a returning user is treated as logged out. These are configuration and wiring gaps, not deep code rewrites — but they're invisible until someone who isn't you tries to get in.
Our AI App Rescue Process: From Diagnosis to Fix
Our three-step process begins with a free three-blocker teardown where we test the actual sign-up and sign-in path a real user would take and flag the most obvious auth blockers. Next, we provide a $99 detailed diagnosis that traces your specific login failure to its root cause — redirect config, environment variables, session settings, or provider setup. Finally, if you choose to proceed, our $499 fixed repair sprint includes actual code and configuration changes plus before/after proof that a fresh user can now sign up and sign in. We don't offer guarantees, but we do show you exactly what's breaking and why.
What We Won't Promise: Realistic Auth Expectations
We won't promise that every authentication edge case can be resolved in a single sprint, or that your login flow will handle every provider, device, and browser identically. We won't guarantee your app is secure — a working login is not the same as a hardened one, and you should rotate any credentials that were ever committed to code regardless of what we find. We show you evidence from your own app — before/after screenshots and a real sign-up test — instead of borrowed claims. Our approach is honest diagnosis of what's actually failing, not blanket assurances.
Questions
Why can I log in but my users can't?
Because your browser already holds a valid session and your local environment has the right keys and redirect URLs. New users hit the production configuration, where callback URLs, environment variables, cookie settings, or CORS rules are often missing or still pointed at localhost. The cold sign-up path is the one that's broken, and it's the one you never test.
What's the difference between the free teardown and the paid fix?
The free three-blocker teardown walks the public sign-up and sign-in path and flags the most obvious auth blockers. The $99 diagnosis traces your specific failure to its root cause. The $499 repair sprint includes the actual code and configuration changes plus before/after proof that a new user can get in.
Do you guarantee login will work for every user?
No. We fix the defined failures we can reproduce and prove the fix with a real sign-up test, but we don't guarantee every provider, device, or edge case, and a working login is not a security certification. If a problem is outside a realistic fixed scope, we say so in the diagnosis.