Numerous XP errors in Fall of Plaguestone [SPOILERS]
here is a spreadsheet that shows proper XP leveling tracks with the Part sections being the milestone leveling.
https://docs.google.com/spreadsheets...QI8/edit#gid=0
Following XP given by Fantasy Grounds you will be leveling well before the chapters are finished.
As a workaround keep in mind that updating modules wipes out your changes, and you will have to renter the XP every week if you attempt to fix it ahead of time. So just keep the spreadsheet handy to fix the XP right before you award it.