Im having a very odd, and frustrating problem

I have a VPS server that i connect to remotely using RDP

just having a problem, I cannot RDP to it from my home network, however, i can if i use a 3G modem, or any other internet connection, just not my home internet.

I've tried everything i can think of, and nothing ive done works.

I've disabled firewalls, on both ends. checked my DNS and gateway settings, check RDP settings. EVERYTHING i've tried isn't working.

this is what happens when it tries to connect. i open RDP and type the server name (I've tried the domain name, and just IP address), connects, and asks for password, then just sits on estimating connection quality, and eventually comes up with either 

"A licensing error occurred while the client was attempting to connect. (Licensing timed out.) Please try connecting to the remote computer again. "

Or 

"this computer can't connect to the remote computer. the connection was lost due to a network error"

Again, this is only on my home internet connection, any other internet connection works perfectly. i've also tried connecting on several computers, with the same result

please help, I've done everything i can think of.