Rexrainbow's Authentication plugin does not connect and does not generate an error. Help!

Hi guys, I've been using rexrainbow's Firebase Authentication plugin.

Unfortunately I seem to require that my clients always clear their browser's cache first before attempting to authenticate. Otherwise it doesn't put out an error message nor does it succeed.

Nothing happens.

No error message, no console notification, no connection.

I'm not sure how to pursue and solve this issue... Any ideas?

Thanks

-ViLa