Install Issues for Oblivion

Hello, I’m a little bummed out.

I just bought Oblivion and when I go to install the theme via wp-admin, theme > add new theme > upload (select .zip) I get an error. A blank page appears with only the words “Are you sure you want to do this?” and nothing else.

I’m very frustrated! I don’t have much knowledge of the backend of my website so the wordpress console install method is all I know. I really liked the look of this theme and wanted to swap over to it.

Please help, I have tried disabling my plugins to no avail.

Thanks