BF4 Campaign reset, and weapon rewards like p90 not unlocking.

Im on ps5 currently and have had this issue on Xbox as well. I have played through the campaign of BF4 all the way on Hard, and even unlocked the achievement Tombstone for it. I collected every collectible,  I unlocked the achievement "for the cause". And yet the p90 never unlocks. I have tried the mission over to no avail. I uninstalled/reinstalled. I then saw a suggestion to play a mp mission and that didn't work. And when I went to try the final mission again all my campaign progress was totally wiped as well as the collectibles. I mainly want the p90 as it is my favorite gun, but it simply wont unlock. And campaign progress keeps resetting and im tired of playing it over and over again just to have nothing work or unlock Please fix this. I know im not the only one with this issue.