Trial version immediately expires

I’ve downloaded the current trial version but on the first run it displays a dialog saying “Blocs trial finished” with the options to cancel, get license or enter license.

The “Your topic is similar to…” section shows several other people with the same problem, but no responses. Any suggestions, since I would like the chance to try the app out before buying?

I returned here:
https://help.blocsapp.com/managing-licenses/