Many players are reporting that they can’t move to World Tiers 3 and 4 after completing the Capstone dungeon. Instead there seem to be level requirements implemented. This is only the case on new characters created after the patch. Apparently, these come in at level 50 for the WT2 to WT3 transition, and at level 70 for WT3 to WT4. This information is coming both from a thread the official forums and from many, many posts in the Sanctuary Discord, as players are unable to move into the tiers without meeting the level requirements.