Website
Image
The css is found in the plugin folder views/payments/payment-gateway/stripe_button_shortcode_view.php line number 156
$class = isset($args[‘class’]) ? $args[‘class’] : ‘stripe-button-el’
This is only set when it is activated and you use your own image I have not tried a default image I am using my own image I can try a default image and report back and see what it does. There is a comment above the code that says this //Get class option for button styling, set Stripe’s default if none specified so that tells me default will use something else. I am just hoping I could get this issue resolved so I can move on.