Next.JS website not showing on Instagram/Firefox/Opera Mobile browsers

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My website developed with Next.JS is failing to load on certain mobile browsers—specifically Instagram’s in-app browser and Firefox mobile on both iOS and Android. It works fine on Chrome (mobile & desktop) and desktop browsers. I’ve confirmed the SSL certificate (A grade on SSL Labs) and domain records look normal at first glance, but the site still throws errors like “Address Not Found” or “There was a problem loading this website.” Hosting/Domain Setup Domain is registered with GoDaddy. DNS is managed in GoDaddy’s interface. The site is hosted on Google Cloud / Firebase (with a custom domain setup). SSL certificate is automatically managed via Google’s Certificate Manager. Suspected Issues Potential DNS configuration quirks (e.g. underscores in CNAMEs, DNSSEC issues, or partial delegation). Instagram or Facebook might be blocking or flagging the domain. Possible SNI-only certificate or older TLS webview issue on certain devices. Redirect or mismatch between www and the apex domain. What I Need A thorough review and fix of any DNS or SSL misconfigurations preventing the site from loading in Instagram’s in-app browser and Firefox mobile. Verification that my website is set up correctly with Google Cloud/Firebase. Debugging and testing on real devices (or device emulators) to confirm the site resolves on those problem browsers. If the domain is flagged by Facebook/Instagram, I need guidance (or help) on how to request a review/unblock. Deliverable Live triage/support for my website to ensure it loads on all major mobile browsers, including Instagram in-app browser and Firefox for Android/iOS, without “Address Not Found” errors. Ideal Freelancer Strong DNS/Networking background. Experience with Firebase/Google Cloud custom domain hosting. Familiarity with SSL/TLS best practices and certificate troubleshooting. Ability to test in-app browsers (especially Instagram) and handle potential Facebook domain-block issues. If you have proven experience in diagnosing and resolving these kinds of domain + SSL + in-app browser problems, please apply. Let me know how you plan to troubleshoot the issue, and include examples of similar work you’ve done.

Keyword: Web Design

Web Development Web Design TypeScript JavaScript React