I just tried with another account on which I had no achievements yet and still nothing. I earned a few achievements and the skins are still locked. Are the developers actually doing anything to fix this? Because this has been going on for several months and nothing changed.
All they say is they will resolve and link the ticket as a duplicate but still didn't do anything to fix this bug. This has been going on for several months, maybe even a year and still nothing. I even tried unlocking the trophies again with another account and obviously it didn't work.