We do not recommend that you use a Goo.gl link for UK based ads. For some reason, Goo.gl does not correctly track UK visitors regardless of which method is used. For UK orders and UK orders only, we recommend that you use Bit.ly to track these campaigns which will track the UK orders with an 80% accuracy. While we do not monitor Bit.ly campaigns, if you inform us of any discrepancies we will correct them. We only honor bit.ly for the UK for this reason only. Please open a ticket with the ad id in question. We will see what can be done to help satisfy you.