It won't let me reinput the login details—when I launch the app, I immediately get that offline activation message, and it crashes when I try to hit the back or login as different user buttons.

So I just purchased the Octane 3 plugin for C4D and accidentally clicked "offline activation" the first time I tried to activate.

I got an error message saying that I was unable to activate it offline, but now when I try to go back or click the 'log in as a different user' button, the plugin ...