Hi Zeycus, I too have had trouble connecting various wallets since the change in Umbrel’s interface.
Umbrel’s interface still cites this link but each individual app instructions still pertain to the older interface.
Since you mentioned Zeus, I can hopefully help by walking you through how I was able to reconnect after much trial and error thanks to the outdated Umbrel instructions.
In the main Umbrel home screen, click and open Lightning Wallet
In Lightning Wallet, click the three small dots in the upper-right hand corner followed by clicking “Connect Wallet”
Use the REST (Tor) QR code for Zeus. Make sure the “Use Tor” button is enabled.
Details w/ screenshots for Zeus are here: Zeus LN (Mobile)
Hope this helps.