Possible virus fall positive?

Website URL

https://www.photoshoppro.co.uk/

Error Message

No error message

Other Information

Hi

I am uploading my website which uses the Salient theme from Envato. While uploading, one of the files - salient-studio-templates.php - disappears when uploaded. Success is reported but an instant later, the file disappears. I have tried re-downloading the offending plugin through WordPress and the zip file downloads and also disappears a moment later making me think this is getting caught by a virus scanner. Up until revamping my website today, this file was fine on the server - I’m wondering if it is now being caught as a false positive?

This theme is from a reputable company and worked fine before.

Is there any way to report the file as possible false positive? Any help would be appreciated.

Kind regards

Andrew