Cannot Activate a New Homey Pro (Early 2023) in first time install

Can you try if you can update from a computer using a USB connection?

Filow this guide https://support.homey.app/hc/en-us/articles/7263435817116-Connecting-Homey-Pro-Early-2023-to-a-PC-Mac-with-USB

https://ota-usb.homeypro.net/

Else check tomorrow if they respond on your support request