Problem connecting to brand new Homey Pro

This looks like an original Homey with microphone ENABLED running on the original Firmware v1.5.x.
That firmware and speech isn’t supported anymore Service Announcement - Homey v1.5 is now end-of-life
According to my latest info it should still be posible to upgrade it from the “new” mobile App but it looks like there is no correct connection with your account to start that Firmware upgrade. Might be some bug if first time setup is still on FW 1.5.

You can stop trying other things as a qualitative stable adapter of 2.0 A should be fine, as also is your WiFi.
Just leave it powered on, and wait for contact of Athom Support.