@Charity please stop flooding your own discussion for support. When available, someone will assist you.
Extensions are not installed in the database. First, we need to know exactly what is going on. Please follow the troubleshooting guide and locate your error logs in the /storage directory. Then, attach your php flarum info via SSH so we can see what packages you have installed and how they interact.
This will give us the root cause of what’s happening and can provide a solution.
After you provide such info, you may trigger in your SSH session, composer remove for/upload to uninstall that package, but I doubt that’s what’s causing your issue.