Please change the wording to avoid confusion from:
"Common fix, try: Ctrl+Shift+0 and Refresh"

to

"Common fix, try: Ctrl+Shift+0 then Refresh"

I have students and teachers coming to me every testing season, and this could be avoided by changing one word.

It does not have to be exactly this, just something to convey the message that you don't press Refresh at the same time as Ctrl+Shift+0

And perhaps add in "(zero)", because I have students reading it as "O"