My site URL:Blacklist

My site is completely secure, but avast says there is a threat
hxtps://vascular.pro
What can I do to solve this?

https://i.ibb.co/KWMD2pX/Whats-App-Image-2022-05-04-at-14-55-27.jpg

Reporting a Possible False Positive File or Website - https://www.avast.com/false-positive-file-form.php.
You should get a response in a day or two.