Craft Commerce Barclays ePDQ integration

Has anyone got this plugin/payment gateway to work?
Having issues with both client and test account details – testing on Craft Commerce 3 and know plugin was developed for Craft Commerce 2 so it is possible therein lies the problem so wondering if anyone has had any joy getting this to work with Craft Commerce 3.

(all submissions are logging a unknown order/1/s/ – SHASIGN field sent in the transaction request doesn’t match the SHASIGN calculated on BarlcayCard end – error)

Cole