Help Please! Installation Successful but,…..

So my install worked fine I can login to dashboard, but no changes I make work. Can’t change admin passwd. Can’t Post. Can’t delete. Nothing. It’s like like nothing is taking. Checked the MySQL db all tables are present and I get no error messages from WP. What gives I am thoroughly confused any advice Please. Eternally grateful. I want to migrate my Bloggers over to WP for self hosting but…… I can’t do anything have wiped and done clean install like 5 times now same thing everytime.