Atag One App on a Homey (not Pro)

Atag One App is not working anymore, I used it several years on a Homey. When I want to reinstall, I only can install it on a Homey Pro?
I have a Homey, why do I have to use a Pro?

“Homey” now means “Homey Cloud/Bridge”, “Homey Pro” now means “the old Homey hardware or the Homey Pro hardware”. So you should be able to install the Homey Pro version on your Homey.

Congratulations with your Free Upgrade:
You have a Homey Pro now: