Simplified Mode Not Working

Hi,

Simplified mode not syncing with woocommerce/my template. It shows “enter correct postcode details”. It seems like combination of postcode and suburb sequence issue.

In the absence of Simplified mode, I am force to use Full Calc mode. However, users have to enter postcode and suburb details twice, once in woocommerce default shipping which then allow to open Transdirect calculator at the bottom of the page, users have to enter the postcode again in calculator.

Are you able to guide me on below two issues?

(1) How can I use simplified mode so when user enter shipping details in default woocommerce fields, Transdirect shipping fee is displayed?

(2) how can full calc mode use postcode and suburb details directly when user enter shipping details into default woocommerce fields?

Is that my theme which is causing this problem of others are also facing the issue?

I hope to resolve this soon.

Thanks

The page I need help with: [log in to see the link]