studio-infinity.com subdomains still flagged as Phishing after reporting them as false positive

Good morning.

We have several landing pages that are being identified as a phishing site.

Any subdomain of studio-infinity.com, even if it doesn't exist (like nothingatall.studio-infinity.com) is being flagged as phishing.

Since last week, we have reported several times our site as false positive to Avira and other security vendors, but Avira still reports the site as phishing.

We reported the site several times to:
https://www.avira.com/en/analysis/submit-url

But we didn't receive any answer/change at all.

Could you please remove it from your blacklist and/or tell us what's wrong with our domain?

Thanks in advance!

Toni.