Stop Being Smart

I am signed into my phone with Google Account 1.

My account here uses a different Google account - Google Account 2.

When clicking the Log In button, Plex simply says “no user found” - I guess it’s trying to be helpful and log me in with Google Account 1.
Is there a way stop the forum trying to log me in?

I used Incognito mode to log in.

Assuming you are using Chrome, then switch profile to Account 2 for a simple solution

Otherwise, clear cookies for forums.plex.tv

Using Edge, but will take a look at this for my phone.