no solution found yet. we have updated all areas of our services including internal tools for development. we are mainly trying to get timestamped logs of deprecated request headers, rather than just the last time a deprecated call was made every 24 hours from Shopify. This will help us find out where the calls are actually coming from. Additional info on store domain, User-Agent or even X-SDK-Variant (as this is clearly coming from the Buy SDK and affecting mobile also) would be of great use to debug this issue.