Sending or requesting crates doesnt work

My friend and I play this right beside each other and weve lost count how many times we try to send or receive crates.. Theres even a mission we cant complete cause it wont let us go to a friends village.. If this doesnt get fixed ill be deleting the game..besides that its an ok game from ninja kiwi

Slumbox3maker about Bloons Monkey City, v1.9