The bounties seem to reset whenever you go to another relay, did raccoon in Corvus then went to Askonia and racoon was there as well. Also you don't get the easiest bounties and work your way up, that could stall a player in the early game if they only get very high level bounties.
1- Ok, i hate that, no reason to do that x.x, i have not this bug only on that...
2- No, the difficulty bounty depends of your level, after the level 30, every bounty are available.
The file who save the data is unique for all relay...
but look maybe only for you, have you the last version or have you updated the mod with a current save?
Thank.