Intermittent connectivity / timeouts for custom domain (Germany ISPs) – Shopify Edge issue?

Hi everyone,

we’re running a Shopify store with a custom domain (www.moot.eco) and are experiencing intermittent connectivity issues for users in Germany, depending on their ISP.

Symptoms observed:

  • Browser errors like ERR_CONNECTION_TIMED_OUT (Chrome) or “connection unexpectedly closed” (Safari)

  • No HTTP status code returned (failure occurs before HTTP)

  • DNS resolves correctly, SSL is valid

  • Issue is ISP-dependent (German mobile & fixed-line providers)

  • Intermittent but reproducible on specific network paths

Key detail:

  • The Shopify-provided domain (moot-eco.myshopify.com) works consistently

  • The issue only affects the custom domain

  • Shopify admin shows the domain as Connected

  • This has resulted in a significant drop in tracked traffic, as failed connections never reach analytics

This strongly suggests a routing / edge / connectivity issue related to Shopify’s infrastructure for custom domains (possibly POP-/ISP-specific).

Has anyone experienced a similar issue recently?
If so:

  • Was it confirmed as a Shopify Edge / routing problem?

  • How long did it take to resolve?

  • Was there anything you could do on your side, or did Shopify fix it internally?

Thanks a lot for any insights.