Last time I used Rhino was last year, and I tried to login again but I can’t. I used my license key but it expired January 2020. I already have it downloaded and I shouldn’t need to buy it again. I don’t know what to do next.
Your login account is linked to a Google account using an edu email address, and has 2-factor Authentication turned on.
That said, the evaluation license in your account expired back in January.
You’ll need to purchase a license to run Rhino.