ABN lookup with AJAX enabled – not working

Hi again, it seems that the ABN lookup is no longer working when the Gravity Form has AJAX enabled. I had to turn this off a while ago on my multi-page form, but ideally, I would like to be able to turn it back on. It doesn’t look to be working on your demo form either: https://staging.bkbn.au/abn-lookup-for-gravity-forms/forms/multi-page-form-ajax-enabled/

(check ABN button does nothing when clicked after the number is entered).

Many thanks for your help.