Maintenance for the week of May 25:
• [COMPLETE] ESO Store and Account System for maintenance – May 27, 6:00AM EDT (10:00 UTC) - 4:00PM EDT (20:00 UTC)
You can use the zone guide to start or continue the main Summerset questline. It will show you what your next quest is or if you’ve completed it already.
I had the same issue the other day - couldn’t find Raz to start the main questline so I could start the Psijic line - and it turned out I’d done the main questline on that character. The Psijic questgiver was already available in Ceporah tower.