Hi,
It is because you are using the "bootstrap design" in HikaShop.
The checkout in the bootstrap design do not use simple radio ; it uses "radio buttons" where the content of the button is the method name.
You can deactivate the bootstrap design in your HikaShop configuration or you can make an override for the view "checkout | shipping" and "checkout | payment" in order to replace the
if(!HIKASHOP_RESPONSIVE) {
into
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.