The website Forum theme colours are off

I’ve tried two themes so far, and one of them the colors of all the notes to the right of the create new topic text box have inverted colors that make it impossible to read the text. I tried a different theme and on this one you can’t click the buttons in the top right as they are misaligned. You need to move the pointer below and to the left to click the navigation hamburger.

Also, I now have no way to access my forum settings to change anything back.