Invalid Postcode Error

Hi @bencalder. An intermittent issue with invalid postcode errors suggest a caching issue, so I’d recommend checking your caching plugins. We have a guide here for setting up caching plugins.

Aside from that, you can do a general conflict test using this guide – https://docs.woocommerce.com/document/how-to-test-for-conflicts/

I hope that helps!

We haven’t heard back from you in a while, so I’m going to mark this as resolved – if you have any further questions, you can start a new thread.

– Joey