Data Loss after redownloading the game

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I have not played in a while, i did test the extended version beta when i receieved a email for it, i had to delete and redownload the game i was level 12 and i was reset back down to 1. This is agitating because i have to make up 12+ hours of grinding full hard missions again just to get back to where i was, i am regretting ever buying this game due to this data loss, i no longer have the time to farm and this game is no longer enjoyable it is unfair that this had to happen to me. --Rant Over