Discount Coupons v3.34 - issue when incorrect code entered

[JohnnyMars]

Hi,

 

I have a strange problem when using the Discount Coupons v3.34 contribution. It installs fine and allows me to create coupons and they work correctly calculating the right discounts etc.

 

However, when I enter an incorrect coupon code during checkout, I am immediately returned to the account log in screen ... has anybody experienced the same issue or, more importantly, does anyone know what I can do to fix it?!

 

Any help gratefully received and thanks in advance.