Progressive Dynamics has an excellent service department and online troubleshooting guides; You can find them online at this weblink:
http://www.progressivedyn.com/troubleshooting_home.html
The PD service department can be reached here:
Progressive Dynamics
Service Department
507 Industrial Road, Marshall, MI 49068
Pho: 269-781-4242
Fax: 269-781-7802
Service Dept. Fax: 269-781-8729
You have a 2 year warranty from date of purchase, and there is an explanation on how to obtain "out of warranty" service at this link:
http://www.progressivedyn.com/servicedept.html
Hopefully, it is something simple.
Good Luck