Friends Get Red Square

I have recently made a server call “Shoe’s Serious RP”, and I shows up in the server list. I can join without any issues but, when my friends join they get a red square. I’ve looked through the forums and couldn’t find anything related to my issue. I have no idea how this is happening.

@AdvancedShoe Your up/down speed?

@kanersps 10 mbps

@AdvancedShoe Your friend locations? There ping may be too high.

@kanersps One is in brazil, and the other i’m not really sure of.

@AdvancedShoe And where are you?

@kanersps Florida

make sure its port forwarded properly

@GanjaMonster It is, and they were able to join. Thanks anyways.