Thank you for the continuous reporting!
The UI is quite complex when you dig in… You can load things in all slots and also you have 3 chains… Try “New”… We clearly have a communication/documentation issue here. I can recommend @LoFiLeiF video:
For registration, I just updated the server - and you’ll need to enter your email and get a new code again… if you try again, please try to register with the standalone version (it will apply also in the plugin).