it happened twice, i think it's related somehow to my facebook account being logged.
well, i was searching for staff from one account but, when i decided to bid, i realized i ended bidding with the account i wasn't logged in. i ended bidding from first account.
i wasn't sure because i wasn't aware, but this morning i started searching for a driver, when i found one, i try to bid and the message saying i had no more tokens showed on my screen. the thing was that i was watching my 9 tokens and the system was trying to bid from my other account without tokens.
the account with 0 tokens is the one linked to my facebook. to solve the problem i had to use the incognito mode.
also we need some way to cancel after bidding ;)
thanks, and sorry my english guys, hope you understand this tricky issue.