My remote PC can remote control other pc's, but can't be connected to.

*This all happened after a remote reboot*

My remote PC is showing as online in TeamViewer, and yet nome of my other devices will connect to it. They will say 'connecting', but nothing happens on the remote PC. However, the person on that end was able to connect the other way. (Aka connecting to my laptop using the remote PC).

I have not changed any relevant settings, and easy access is granted. I've tried rebooting again but to no avail.

What could be causing this?