I NEED HELP PLEASE

[Zinx777]

Have you tried running PPSSPP as Administrator? or using Port shift with value above 1024 ?

yes I have tried those have you tried it on windows 10? and if so did it worked?

I only have Win10 actually, may be the game is not supported for multiplayer on PPSSPP ?
Have you checked in the multiplayer compatibility list here? http://forums.ppsspp.org/showthread.php?tid=9037
You may also want to try the modified build available here http://forums.ppsspp.org/showthread.php?tid=16972 or here https://github.com/LunaMoo/ppsspp/releases

Also make sure each PPSSPP have different MAC address in the network setting, because PSP identify device by MAC address instead of IP.

Hey AdamN do you have any more of your unofficial Ad-Hoc builds somewhere?
Sorry i bother you about this.
Some versions worked really good for some games back then.