Hi @oldbear & @pourio. I just came across this thread trying to solve the problem myself and I finally found the simple answer after hours of searching. You can rename the “Category Archive” to anything you want in the Add Category section of WordPress.
So when you create a new category and you name it, after you create a slug (using the Xtheme) there is a Parent option, then a description option then right there it’s a Archive Title option. That is where you can type in the name you want. By default it’s blank and when it’s blank it shows that “Category Archive” thing. So just add in the name, save and you should be good to go!
Hope this helps!!
Note: This is for the Xtheme
