Hundreds of 404 Broken store links containing "&logged_in_customer_id="

Topic summary

Issue Identified:
Google Search Console is reporting hundreds of 404 errors for product URLs with &logged_in_customer_id= appended to the end, creating broken links (e.g., products/frilly-frames-lattice&logged_in_customer_id=).

Root Cause:
The problem appears linked to the ShopSheriff AMP app, as multiple users confirm experiencing identical issues across their Shopify stores, with referral URLs originating from AMP pages.

User Concerns:

  • Initially attempted creating redirects but stopped after learning similar issues (like web-pixels-manager@ errors) are known Shopify bugs where redirects aren’t recommended
  • Questioning whether to ignore these errors or apply exclusion rules
  • Considering uninstalling the AMP app due to lack of ROI and poor developer support (11-month-old support request went unanswered)

Current Status:
One user contacted the app developer for clarification but hasn’t reported receiving a response. The discussion remains open with no confirmed solution.

Summarized with AI on November 2. AI used: claude-sonnet-4-5-20250929.

Yes, we are using the AMP app. I’m wondering if it’s time to uninstall it. I’m not sure it’s worth the hassle and after a year of using it I can’t see that it’s adding to my bottom line with the monthly fee. Plus, I already had someone speed up our most used collections and product pages without it.