I did some of the Trials bounties today together with some friends and on claiming the bounties I got the XP but not the tokens. My friends got their tokens though. We all did play Trials for the first time and didn't have a Flawless yet. Later today I participated in the Trials Twitch interactions, which also rewards Tokens. Again, I didn't receive any tokens but all other rewards. As I saw now, my regular inventory is full but the postmaster would have been empty, so it seems like tokens don't go to the postmaster if the inventory is full but just get discarded. There were no network errors or the like involved. I also restarted the game now and it also already has been a few hours inbetween. So the tokens are definitly not on my account.