Error 10035 in Macross triangle frontier

[AdamN]

Socket error 10035 (EWOULDBLOCK/EAGAIN) is not really an error, it tells the game to try again because it can't be processed right now.
For example when the game is trying to receive a data but there is no data to be received, so this kind of error code is normal to be seen many times on games that use non-blocking socket, since they're repeatedly trying to receive data in a loop until a data is found.

The main issue is, "why there isn't any data coming?", one of the reason is because your port was blocked thus unable to receive any data from other player.

Please make sure all players to follow this guide on the part "How To Find Out If A Player Have Blocked Ports Or Not" near the bottom of the page https://github.com/hrydgard/ppsspp/wiki/...ith-PPSSPP

Edit: based on your screenshot it's clearly seen that you're not connected to proAdhocServer, thus won't be able to see/meet other players, and the reason is because whoever hosted the AdhocServer have a blocked port or forgot to enable built-in AdhocServer, thus you can't connect to it.