Hello @user30732 ,
You'll need to login to your dud trial account, and update your username to something different / unique. Once you've done that, you'd either need to explicitly click the link in the original invite email, or ask the owner of the correct account to send your email address another invite and click the link in that one. If you try to create an account without going through that portal, you'll just end up making another disconnected trial account.
It's also be advisable that once you've gotten your login setup for the correct account, you update your username to something more unique - that way your email address is free to be used to setup another account user login if necessary.
If you need further assistance with updating their other accounts' username, I'd advise calling general support during their working hours to provide the email address in question, confirm security permissions live, and work with the agent to administratively update your dud trial's username.
For a full rundown of how adding users to accounts works
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