Got my Deco X50 5G connected by Ethernet cable to an unmanaged switch which my Xbox is connected to through Ethernet cable and I've got a slight issue stating my NAT Type is strict and UPnP is unsuccessful. I have been looking at multiple threads, websites and YouTube tutorials to try and fix the issue but still not been successful. Would appreciate if someone with more knowledge than me has any ideas or solution to why this is occurring.

UPnP is definitely turned on in the app. I've got my deco working from a 5G EE mobile signal which my other devices work great from. No other internet sources are connected and have tried using wireless connection for the Xbox and still have the same issue.