Will check back later for details but in the meantime - when you say ‘my local Firewall is disabled’, what exactly do you mean - local firewall at the router level or Windows Firewall? If not the latter - try temporarily disabling Windows firewall and see if it gets you somewhere.
Either case, here’s a list of ports and accesses needed from your PC/phone and your printer (set in LAN-only mode) in order for them to successfully communicate: Orca Slicer or die! - #270 by zwerko