We have purchased the Magento 2 One Step Checkout extension v1.2.9 last week and implement it in our staging environment M2.3.3. We facing an issue on the checkout page. Failed to load the discount component. 

Please advise how to fix the issue. Please refer


The issue is due to the incompatibility of the current module's version with Magento 2.3.3 and under versions.

To solve it, please overwrite two files


If you need any further support, please feel free to contact us.

We'd like to help.