HI. I upgraded yesterday and got the blank page for my website AND the login page. I got through to my host and website is now restored BUT although the login page is now visible with p/w and u/n “I get the You do not have sufficient permissions to access this page.” message. My host tells me it’s a WP problem and so I’ve been trawling these pages for some fix I can understand. It looks as this is a catchall for ANYTHING that may be wrong. Can someone help with something simple to follow?