I have purchased Rhino 6 upgrade. I have downloaded it and I have attempted to install it. At the end of the installation, I entered the Rhino 6 Licence Key. Rhino asked me to use online account. I do not use Google, and I will soon quit Facebook, so I created new account with new password. The following screenshots illustrate these actions.
About 10 minutes later I received email from McNeel, and I clicked on the link in the email. When I tried to login to my account (next screenshot), nothing happened.
When I launched Rhino 6, the following message appeared:
I tried to launch Rhino 6 again. I failed and I was caught in a long loop made of these messages: