Issues after Cross Progression is activated on your account? Check here first!

I was level 26 in prestige 2 and at tier 94 in the battle pass and I had the most the event items I was also plat 2 but it says I’m rookie still also when cross progression happened it deleted all my stuff from the past 3 seasons. Is there anyway I get my stuff back that I spent hours on and my money on because it is messed up to take all that away after being a player since season 1.