Well, to start with the obvious - have you set up inbound routes ?
Also, when you try calling into your PBX, do you see the call hitting your PBX, when you’re in the asterisk -vr console ?
Answering those questions will allow us to identify whether it’s a misconfiguration at the PBX or your router.
I appreciate your frustration with this, but I’d suggest giving as much information as possible when seeking assistance - it’s like going to the doctors, and expecting a diagnosis because you ‘don’t feel well’.