Editor not working ?

Can anyone please help me. This is driving me mad :)

I am. Using GP, Pixel theme.

My issue is that when I click new post and then type in the title, if I then hit return, all my options disappear. I can (sometimes)add a block (para) using the +. but can’t actually see it to type into. All i see is the box with the seo option.

I hope you can advise.

Kind regards