Although we're all still working through the free time from our original purchases, if you haven't yet gone through the "subscribing" process, you will be stuck in Chapter 1.
To expand on Sierepica's answer, the Development Team has been working through all the new bugs from the new content and hasn't reported to us a planned release date for Season 2 (Chapter 4) yet...and then a couple of folks got sick/had personal issues. So we're being patient and having fun with the new professions.
Regarding the game resetting your progress leveling up, I ran into that, too. It helped if I moved to a new area after leveling up, and that seemed to help a little. And then the problem got better and went away on its own. Hopefully it will be the same for you.