Cart checkout issues

I’m having an issue with the shopping cart.I’ve only entered one product and free shipping over $250 at the moment, just to test out the shopping cart.There’s options for ‘Register’ and ‘Guest’ Checkout, but the radio buttons don’t show (screenshot attached).
If I click on ‘Continue’ under Registered customer it gives an error, then shows the two options with radio buttons (screenshot attached).
I then clicked on ‘Guest’ and ‘Continue’.Then when I get to the payment page, I have two options setup up:
Offline and PaymentExpress PxPay, but again there’s no radio buttons showing (screenshot attached).I can click continue and ‘confirm order’, and it takes you to the Payment Express payment page.I’m using Gantry 5 and Supra template for the site.What do you think could be wrong, with the radio buttons not showing on some parts of the checkout process?Thanks for any advice.
 

Issue now fixed, by changing Eshop system layout setting to Twitter Bootstrap 5.

Dear Andy,

Yes, that's correct!

Sincerely, Giang