I am using
Zencart 1.5.5a
Template : Responsive classic

first of all issue with 1.0.7
1) display coupon discount but when order confirm goes to firstdata credit card page coupon amount not effect . no discount
2) coupon free shipping also not working

when upgrade to 1.0.8
1) payment method option not displaying
2) when click on confirm order popup select payment method
when replace tpl_checkout_one_default.php with previous 1.0.7 behave same as 1.0.7

Please help will thankfull