In our plugins, you can choose whether you want either Checkout Express or just regular checkout.
The difference between these two is that Checkout Express will automatically be able to remember a customer's information and complete the contact information in the checkout completely automatically. Certain browsers will require you to enter an email address and verify with SMS in order for it to fill in the customer's data.
In order to be able to use invoices for companies (B2B), you have to activate Checkout Express.
Some online stores have reasons for wanting to collect the customer's contact information in a separate form next to it instead of skipping a separate form and having the information filled in automatically in DIntero Checkout. It may be for cases where other plugins need to collect customer data or the like. Then it may be more appropriate to does not select Checkout Express.
If you want to discuss what is best for your online store, contact us.