Hi, I have a similar problem I hope you can help with. I have assigned 6 zones for different regions in the UK. Each zone has a different flat rate shipping charge. However some postcodes aren’t working and revert back to the cheaper shipping rate. An example:- PH14* is in zone 4 working fine, PH15*, PH16*, PH17* & PH18* are in zone 5 and cost should be more but the flat rate charge reverts back to the same as zone 4. PA1-19* are zone 3 but PA34 is zone 6 but reverts back to zone 3 charge. Not sure what I’m doing wrong. Any help appreciated. Thank you.
