There were some changes that had been made to the PayPal Standard Checkout, which are related to receiving the error message "things don't appear to be working at the moment."
Here are some of the top reasons for the error message,
Currency symbols $ in the amount field
Quotation marks in drop down menus or description field, example sizes 10" x 10"
Incorrect formatting of any of the variables
Passing too many characters in the item name field: max Character length: 127
Using a deprecated variable
The below link has additional information on the top reasons for this error message:
Things don't appear to be working
Here is a link to a listing of HTML Variables:
List of HTML Variables for PayPal Standard
Thank you,
Jennifer
... View more