Spell checker disappeared

In my 3 month old document, the real time spell checker has suddenly stopped working even though it’s marked as being on. It started when I copy and pasted something but has effected all new text too.
I installed the update but this hasn’t fixed it. I
'm a bit dyslexic and now my document is just a lot of odd looking words with single letters in the wrong place. Nothing is underlined in red.
Check Spelling is definately turned on.
Does anyone know what’s up?

Did the option to check in real time get accidently unchecked.
File>Options>Corrections-Spelling

Hi GoalieDad.

Thanks, yes everything is ticked but there’s not spell check.
I wonder if it’s a bug.

Try a different project or create new one could be a setting in current project. If it is open both and drag files to new project