New Post: Labels on the product details page are too short

You're going to keep running into problems because it is not running at root. However, I am aware that some people have done this in the past.

Some of those problems can be fixed by modifying files in the module folder, but the checkout image paths are hard-coded so you would need to modify the source code and build your own version to fix that.

Note that such module and module source changes aren't supported, but you are free to do anything you like.

Source code is available on the Source Code tab above.
Regards
Rob