Android 13 with IKEv2/IPSec uses Group(24) only (as I know) and WatchGuard maximum capability is Group(20). They cannot communicate each other as can be seen in Firebox System Manager Traffic Monitor. Is there any solution?
@ZoltanKallo This requires a VPN client where you can configure the proposals made by the phone, such as strongswan.
WatchGuard Customer Support
I'll try it ... it should have already needed yesterday