Sunless Pathfinder uses the Pathfinder 2nd Edition ruleset (see https://2e.aonprd.com/) as modified by the current errata.
Ascendant campaigns can view previous versions of their pages, see what has changed (and who did it), and even restore old versions. It's like having a rewind button for your campaign.
We've already been saving your edits, so if you
you will have instant access to your previous versions. Plus, you have our
no risk refund guarantee
, so there's nothing to lose.