New 3.7.26 install on new WP 5.81 won't function, help please
 

As the title says, I just did a new WP install. Centos 7.9, PHP 7.3.28. No problem with the install, but now when I want to begin editing it, the button turns red and no action occurs. Hover over them, they turn red. The only option on the page that worked was the reset, so I ran that, not expecting anything to happen.

Please help me figure out how to get this working.

Thanks!

On further inspection, I found a previous working install but the previous version is exhibiting the exact same symptions. Something that was working isn't anymore. Still need help.