I worked in IT Support all my life, so didn’t mind it too much when at work, however I really really hate IT issues at home. Probably a full power down with an unplug may be needed. Good luck
I had issues with this version, too. Had to power down everything (NDX2, router, phone) and power it all back up. Took a couple of minutes but it seems to be OK now.
I have always reset rather than restarted - I only discovered the method of restarting just now after you mentioned it.
Oh for the days when equipment was sent out with detailed manuals, but I understand they now become irrelevant as firmware updates add, change or remove features.