Credit purchases are not instant.
Credit purchases over 12 need to be verified before app key is generated. 

All credit sales are final and are non-refundable, please take care in providing correct information.

Dodge credits to be used with your HP Tuners Standard or Pro unit.  Most vehicles require two credits; however, some do require additional.  To see a list of supported vehicles and the amount of credits needed per vehicle or per year/model, please visit HP Tuner's Supported Vehicles Listing.