Hi Bodo,
The only reason you should be asked to upgrade more than one time is if you are signed in to at least two different mSecure accounts. I can't check your mSecure account, because the email you are using here in the forum is does not return an account when I use it to search for one. You can write the email out here in the forum, or if you prefer, you can send an email to our support at "support@msevensoftware.com." Let me know how you would like to proceed.
Bodo