Incorrect e-mail when purchasing a license

I recently purchased a trial license for the Windows application, but I mistyped my email address during the purchase process. Therefore, I do not have access to my license or account.

Can someone please help me with how to:

Correct the email associated with my license?
Cancel the subscription to avoid unwanted charges?
Ensure payment is not made if the license is not linked to my correct account?

I would be grateful if you could help me resolve this issue as soon as possible.
I have already written to the support several times but so far without reaction and answer and the license is still active.

Thank you for your help