@dogvsman4 That's indeed strange and seems that you are missing content. Did you only buy premium and did already own the Base game, or did you buy the complete game in the Revolution edition (including the premium pass)?
Reading your story again, you say at first you could play the DLC maps, but did not level up. Most probably your premium did not work from the start but you were able to access DLC maps due to Premium Trials being active which opens up the DLC maps to all players regardless if they own premium or not.
The good news is, once you get your premium working, the XP and weapon unlock progress that you made during the period you were able to play via Premium trials should be retroactively added to your account, same with the 14 Superior battlepacks that are part of the premium pass.
Now to get your premium content working I propose to contact EA help via below link.
https://help.ea.com/en/contact-us/?product=battlefield-1&platform=ps4&category=missing-content
Good luck and I hope your issue will soon be resolved!
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I do not work for EA, I'm a gamer trying to help fellow gamers. :eahigh_file: