Hi! I was experiencing the same issue for a few days and assumed it was from some of the custom functions I was building around the plugin. After much troubleshooting and failing, I deactivated the plugin and re-activated…and the redirect to ?gotl-signin stopped happening and everything was working as expected again.
If anyone lands on this support thread, a good first place to start would be to deactivate and re-activate the plugin again.
Hopefully, this gets addressed as to why this would happen in the first place!