AvivBenZvi I have WorkingHours 2.9.19.0 for Microsoft and i'm not able to buy the pro version. i'm clicking on the prices and nothing happend. The only Links that works is for Gumroad but the price there is way much higher.
timo If the button is not working, there is some problem with the MS store app, as also explained in the FAQs. Please try to reset the MS Store app and make sure there are no pending (Windows or Store) updates.