Can’t do

First, I love wordpress and I know with everyone working it won’t be long before everything is resolved. But, until then iwas wondering if anyone had a work around. I can’t add users, use the rich editor (yes, I’ve turned it on but when I do the errors don’t allow me to enter the text box)nor can I enter categories. I’ve only been using the updated versin for an hour and these were immediate issues.
Thank you in advance for any help you could give me.