I can't play with friends on SRB2Kart

[RandomLoserGaming]

I followed a tutorial on YouTube on how to play with friends, (sending invite in discord) but when either me or my friend try to connect to each other's servers, we always get stuck on a loading screen with the red bar.
Does anyone know how to fix this?

 

[Tried Blupi]

Maybe learn how to port forward if you are making a server?

 

[PHITHGOD24]

portforwarding wiil work

 

[tropluckyfr]

*inhale*

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