I dont think thats the issue since the IP address hasnt even changed in the last few days, and certainly hasnt changed in the last few minutes between each wake request. As soon as i switch the ethernet cable back to their router, it stops working. I can put it to sleep/hibernate and it wakes up every time. It DOES work if i plug my pc directly into my own router and send the wake request over my own LAN. Other than those two times, it hasn't worked. and then earlier today my PC was on for several hours, and i put it to sleep just to test the WoL and it worked. Once when the PC was off all night and i was able to get to power back on (from hibernate).

So far, i've been able to wake my PC twice using this. I had them setup UDP ports 7 and 9 for Wake on Lan. I have one set up for rdp which is working. But they are willing to set up port forwards for me. I have to use the fiber router they provided and don't have access to it's admin interface. My apartment building recently switched to an new internet provider.

Teamviewer wake on lan internet