Ok, The QR code requires your theme to have the following html attributes for the following fields:
| Field | HTML tag attributes |
|---|---|
| Business Name |
id = ‘BusinessName’ |
| TRN | id = ‘d96d97e8-c857-42c6-8360-443c06a13de9’ |
| Invoice Total |
id = ‘Total’ data-value = ‘{{total.number}}’ |
| VAT Total |
class = ‘taxAmount’ data-value = ‘{{total.number}}’ |
If you include those into your html, the QR code should read fine.