Lucas, I understand you’re facing domain validation issues for your app submission. Since you have three domains, consider these steps:
DNS Verification: Use DNS records for verification, allowing multiple domains.
Subdomains: Leverage subdomains like “documentation.yourdomain.com” to validate individually.
Support Contact: Reach out to app support for manual validation or solutions.
Consolidate Domains: Merge under one root domain for simpler validation.
Developer Input: Seek technical team advice for insights.
Alternative Methods: Check if marketplaces offer file uploads or meta tags.
Remember, each marketplace has unique rules, so review guidelines. Best of luck!