Hello,
Thank you for reaching out to us.
We understand that you are having difficulty with a problem that is unrelated to our theme. We would be happy to help you, once it will be solved for the default theme.
At this time, we can confirm that the button you are looking for is not displayed in the area, because the area is not displayed too. This is normal with our theme, as the default theme does not include this button either, please read our previous suggestion.
For your reference, here is a link to the checkout you are looking for: https://prnt.sc/1K0DOld4tRTZ
We hope this information is helpful. If you have any further questions, please do not hesitate to reach out.
Kind Regards,
8theme team