Panzerjaeger43

Hi i stopped playing for a few months , i had the blueprints to every weapon at the time , my shelter was at level 5 i think . I logged in yesterday and its all gone i literally have nothing at all , i paid for the game and well needless to say im rather annoyed i dont even have the ability to upgrade my shelter even once ! Of course now if i go into a game it generally means instant death. So please what happened ?