Hi, I am not a staff or a mod, but still I can help you for your problem.
For the 150k Pokedollars, staff will be looking for it because I don't have permission for that to look into the money/trades.
For the Pawniard, if you remember that Pawniard is the same in stats, which you traded weeks ago (according to you) , then the trade might have cancelled somehow and because of this the Pawniard is still in your Pc. If that's not the same one, then you might have got it from the boss battles like The Pumpkin King, etc.
Hope this might help you a little.
Have a nice day ~