I cannot upload a theme

I cannot upload a theme

I found a great theme that I want for our Zumiak web site.
I have downloaded it. I have other updates to do but I want to do the theme first.
When I go to “Add Themmes”, and click to “Upload Themes”, the options I expect to find are not there.

I made this youtube video of this. Please help.

Did you try with free theme.

I can switch between the few free themes there. But when I download a free theme I cannot upload anything.

Try turning off all your plugins and THEN uploading the theme.