Your account says Premium so you should be good.
I would suggest installing the PWA edition of My Colony instead of downloading from the Windows Store:
Just go to the web app with either Chrome or the new chromium Edge, and select Install from the slide-out menu, and then it will be installed to your system and work offline.
The PWA is going to be replacing the Windows Store package soon anyway.
The Windows Store app uses the discontinued and outdated rendering engine from the old MS Edge (the pre-chromium edition) which is no longer being maintained by Microsoft.