The Issue:
You have set up a custom subdomain for your GotPhoto shop, and your customers are redirected to a protection page that warns them the site could contain harmful content.
Sample warning: 
The Root Cause:
The issue occurs when a domain is mistakenly categorized as a security risk and subsequently blocked for the users of this service. These are often false positives, and most security services provide a way to report and resolve them.
Solution:
We recommend applying the following steps:
To troubleshoot, first verify your custom domain’s status using publicly available reputation checkers—sometimes ISPs add domains to block lists, which can redirect your customers to security pages warning that the site may contain harmful content. Use the following reputation checkers to verify the domain's status and, if necessary, submit a removal request:
- If you confirm the listing is in error, contact the ISP or block list service that flagged your domain and submit a false‑positive report to request its removal. Use the following reputation checkers to verify the domain's status and, if necessary, submit a removal request:
- Google Transparency Report
- IP and Domain Intelligence Center || Cisco Talos Intelligence Group - Comprehensive Threat Intelligence
- Symantec Site Review
- Domain Reputation Check
- Submit a false-positive report with the affected provider to address the issue efficiently.
Identify which service or security product the customer is using, then check if they offer a form or contact method to report false positives.
Example: Spectrum → Spectrum.net