1: Rapidly tapping play puts out a Network Error, even as you are successfully entered into the queue
2: Both PC and Android
3: As 1 above; will sometimes require multiple clears of the error if tapped rapidly enough. Will be queued up successfully.
4: Prior to Edge of Eternities update, the Network Error was not put out. Perhaps it's trying to enter the queue multiple times and kicking an error out for every queue attempt after?