A long time subscription customer updated his credit card info after receiving note that the renewal didn't go through since his expiration date changed.
Then Foxycart attempted to renew, and credit card payment didn't go through. I tried manually and got this message:
Subscription Transaction Failed: Error: Your payment was declined for the following reason: You passed an empty string for 'user_agent'. We assume empty values are an attempt to unset a parameter; however 'user_agent' cannot be unset. You should remove 'user_agent' from your request or supply a non-empty value.
What should I do to get the charge on his card to go through?