Lost my bought DLC and have tried to get support 7 times, still no reply.

I merged my xbox and playstation account & none of my DLC will transfer to my xbox which is what I play on and what I bought at least 90% of it on including the game when it was not free via gamepass. When I log into my PS account on my partners ps5 all my stuff is there, but not on my xbox where I bought everything and where I play. I am missing too many things to list but going through past posts it seems others never got their accounts to work nor be fixed nor any support helping them. I just started to get into DBD again 3 weeks ago and can't even play with the stuff I own and bought. It sucks. Anyone else get help or fix it themselves? I have tried so many things.

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