Frequently asking for activation

Hi,
I´m owner of the Photo AI app and made some upgrades to V. 3.3. The software ask me frequently to activate the software, so I have to login into the Topaz account, otherwise there is only the trial mode available.
Is that a normal behaviour or is that a bug? This procedure is a bit painful.
Is there a workaround to avoid this?
Greetings
Andreas