How do you play online

[Zlippy-D]

When I boot up the game it only allows me to play training or local

[Jimster]

Same

[Pizzashot]

I read that you might have set the age too low when launching the game which disable multiplayer. Try doing what it says on this site and see if it works.

https://www.ign.com/wikis/multiversus/How_to_Play_Online_in_MultiVersus:_Cross-Platform_Matchmaking_and_Voice_Chat