when we submitted the case, NS support listed it a s defect "Defect 562830: SCA 2019.2 Blank Checkout page" with Case Number: 3591033
This was the work around that was given
_"This is to inform you that our engineers has converted our Defect to an Enhancement.This is because English (UK) language is not yet supported in any SuiteCommerce Advanced version. The translation is made through a request in NetSuite where the en_GB is not yet available. We have also requested to have an official documentation of the currently supported languages._
_However, if you still wish to set the Default language to English (UK) you may build/customize the en_US.js > provide your own translations > rename it to en_GB.js > finally, upload it to the File Cabinet. Pretty similar to the alternate solution we provided."_
I would advise you submit a case the support and reference our case number so support can review it to help resolve your issue