There is a boot function, for people who are away for extended periods, but i don't think there is a boot function for people who just refuse challanges. because, especially durring a tournament, if you're level 50, you don't want to accept challanges from some level 18 hot shot.
also, i don't think there is a penalty for letting challanges time out assuming you're deliberately doing it, you could probably let it time out, then message someone, just to stay in the room
though i personally have let a few time out while i was trying to translate someone's message, because it's not selectable, therefore cannot be directly copied and pasted... perhapse the next update should make the messages selectable, so they can be copied into a translator of sorts, because there are certainly a lot of diverse languages around here
The big problem with this is in tournament time.
Sometimes you are "fighting" for a good position, the time is almost in the end and then you have to wait almost 3 minutes to challenge someone again. When you see, you have no more chance to get a good position. A good option, if possible, was some way to cancel the challenge you ask
What I yesterday wondered about... I got refreshed, challenged a person - that person was said to already have another challenge. I refresh... and the person is again in the list of players to challenge. Shouldn't that person be greyed out? (Challenged again - "has already another challenge"...) Happens a lot.
You can do your homework or go to the toliet if the player has not answerd your challenge..
But... it's quite anoying if while you are in a battle with somebody and that person..has not move his/her move...Maybe they are
disconnected .But some of the people don't fight as your level is higher than them and u won't gain much experience
But remember some people may have resons but some are just faking.. Enjoy playing Urban Rivals