Revert back to 4.2.0 from 5.0 version stuck at connecting to wiifi

Hello,
So I’m trying to roll back to 4.2.0… but during the http://setup.athom.com/ procedure it wont go past “connecting to network”. I get a confirmation from homey that it has sucsessfully connected to my network, but it just keeps loading and loading on the screen and eventually goes back to the first setup screen " Connect to HomeySetup"…
Any help is greatly appreciated.
Stuck here: