I'm currently trying to transfer the assests of my side acc to my main via the help of another player. Everything is working perfectly except the mushroom transfer. When I try to send any amount of mush to them, at the top it says 'pack must be active to send mush'. I have a 29 day streak and have been constantly sending mush to other packs for cp. The other pack has been a member for about a month I believe.

This is not a bug. Your account is not properly set up to be in active status.

Also, you should not be sending things between your related accounts as that is considered cheating. Please try not to do it again. I'd hate to see someone get banned.

Oh sorry! I'll drop it then, but I'm a bit disappointed I can't send the other pack any mush.

Also note that you cannot send anything to another pack in your household. I learned that playing with my sister.