SHORT V: I'm having same issues can't add more levels to my player levels. I decreased to 100 instead of 115 but now I want to change it back to 110 levels and it wont let me.
My server is having similar issues I put it down to just 100 levels but i want to take it back up to 110 each level after 100 being a prestiege level if you would but my server member stopped at level 71 for XP. I googled and it had others with the same issue it seems you need to change the xp cap so I put in the xp for prestieging 10 times (level 110 for my settings) and the override of player xp is updated but it wont let me add the levels past 100.