unable to upload new theme

Please note that the link provided in the OP is not, and must not, be accessible for people not logged in. It’s for admin only.

To answer your question, the reason why you were unable to upload theme could be that it’s not a correct theme’s zip file. Sometimes when we bought or download a theme it comes in big zip with documentation and everything. What we need to upload is the theme’s zip file. Problem could occur when we upload a super big zip file and it timed out or exceeds server upload limit. So please make sure you upload the correct theme’s zip file. If you still have problem uploading, it could also be server setting that prevent uploading and that you should ask your hosting provider for support.

On a sidenote. I looked at your blog and it is perfect with the current theme in use. The other theme mentioned in the OP, with some kind of drag and drop page builder functionality is NOT easier to use than WP default theme. There are always pros and cons. Complex themes built for commercial purposes might look easier for users to build pages but it comes with long term headaches, when not used properly.

I would personally suggest not using that kind of theme. If you are not satisfy with current theme in use, try other theme that’s light and simple, or just do some modifications via functions or plugins to compliment it the way you like. This will go a long way.

This is very hard to tell without “touching”.
Please have another look at the divi folder you downloaded. It should be a zip file. When you look INTO the zip, it should only have a folder (divi, as I would guess) inside. Sometimes the zip you can download includes some other stuff AND another zip with the theme inside. So make sure it’s really the theme zip you are trying to upload.

If all else fails, unzip and upload the folder “divi” to your wp-content/themes via ftp.
But upload should work.
Good luck
Anja