Friends Cannot Connect to Server TS3

My friend is having problems connecting to my server. I have read multiple threads but to no avail. I have port forwarded through my firewalls as well as set up the server properly. (At least I hope I did.) I’m relatively new to this so I likely have very little idea of what I am doing.

My OS is Windows 10

I have portforwarded UDP 9987 and TCP 30033 (I have double checked to make sure.)

Please help, my brain is about to explode…

Take a Look here: [Solved] Hosting a TS3 Server at home - #5 by FakE

I have done everything that thread said, but it unfortunately didn’t work.