How can I resolve a malicious software issue with my Google Ads?

I have been unable to run Google Ads for at least 6 months now.

I received a notification that my Ad was being disallowed due to malicious software, I contacted Shopify for help, but they couldn’t find the lines of code that were stated to be the problem and I haven’t been able to run Google Ads since.

I need to get this resolved and want to ask the best way, if there is any that I can get it resolved?

Pulling my hair out here.

Thank you in advance.