TrueNas SCALE help and info?

I am running TrueNAS-SCALE-22.02.3 and have also installed the TrueCharts app for tailscale. I have everything up and running and can see TureNas from the Tailscale console – but cant access the web gui (TureNas) from my browser with the IP it gives me. Firefox tell me the authentication failed. There is no other option to continue. Its not a ‘normal’ authentication failed, click this to continue. I feel like I’m missing something in the app set up and can’t find any info anywhere on how to set up the app properly? I’m still pretty new at learning networking…I have plenty of services I’d love to access on TureNas using tailescale!