Hey Sam, tried signing out and logging back in. The problem happens when it asks for 2FA code.
When you switch app and goes back to FTX, the session invalid dialog box will pop up again and you can’t get rid of it.
In my case I’m using GA 2FA. And even if I copied the code from GA in advance, once I inputted it, the dialog box will inevitably pop up again and we have to start the process all over again.