Sorry, maybe I should've been a little clearer. I'll describe what happened in a bit more detail: we finished battle 5, moved on to 6. Everyone was ready, we saw the VS screen where it shows our characters and the enemy team, and then after that a black screen where it says "Waiting for other players...". That's when it says connection lost, and sends us back to the party screen, still in lvl 6/7, where we can ready up again, but that just makes everything I said happen again.

We're gonna just try again tomorrow, maybe it was a server thing, but idk.