On the checkout page in the Payment Method section ALL of the radio buttons are coded with the label as for="textarea" and the input has no id so obviously these don't work as expected
You need to remove the for="textarea" from the label as the input is inside the label so will default to the child input OR add id's to the inputs and then the proper value in the for attribute
Why are all these plugins such a mess with elementary errors like this? Where did you lot learn to code? On youtube and w3schools? lol