Hello,

I fixed #4 in previous ticket.

#1 - I believe it is an issue in the Easy Checkout extension, I will look for a fix.

#3 - you can just use CSS with .cart-product-sku {display: none }

#2 - #3 may be related to my following comment:

In a general note, your template is using Bootstrap 5 but yet, you are not using the Bootstrap 5 app in J2Commerce, you are using Bootstrap 4. This may lead to issues.

No, I did not change any of your settings.

J2Commerce is set to work with Bootstrap 5 in your settings (perfect!) BUT the app selected is not right.

Go to J2Commerce -> Apps.

The app used is Bootstrap 4. You need to disable Bootstrap 4 and enable Bootstrap 5, preferably on a test site, so you can check if it affects your pages.

The checkout itself won't change, it is a separate app. But the cart could.

I have created an override of the file validate.php in your template. This is the file to modify to accommodate payment images (around line 170).

You need to modify validate.php to accommodate your requirements. I already moved the title close to the radio button. But I assume you need more changes to the file to ensure images show properly under the radio buttons.

Do you need help with such modifications?

I have adapted the override, feel free to modify it to your liking.