Needing a login fix.. characters missing

I had to hard-restart my app as I got stuck trying to go through the portal in Stormwind to Valdrakken, and in doing so has now blocked out my server character list for some reason and I can’t get it to fix itself. I can swap to another server and its’ characters just fine, but none of my others on Nazjatar are now not showing even though they’re still there. I just renewed to play for a month and have no idea how to fix this :c (and am becoming increasingly irritated at how hard just trying to report something is now -.-*)

Do windwos update and it will work