Hey @n0n4me2019, thanks for getting through to us, welcome to forums and sorry to hear about the issue you ran into during 'The Scholar and the Sunstone' quest.
As it stands, I can confirm that we have received other player contacts about Einar stopping, not moving any further and therefore preventing players from progressing any further, so with that in mind, after thorough review, I can see that we have fix scheduled with one of the upcoming updates, however more details will be available closer to the time, so keep an eye on any news and announcements and apologies about the inconvenience this may cause for the time being.
Should you have any further queries, let us know!