You currently have an Eastern Arc installation. That style of installation requires MPEG4 Equipment or the signal can't be decrypted (general term here). A 625 is MPEG2 and so our computer system automates the response to the CSR (basically saying it can't be activated because it won't work anyway). I am paraphrasing, but that is the meat of the issue. The DISH 500 setup, or any WA setup/hybrid, only needs MPEG2 equipment, which the 722 can handle (VIP receivers are backwards compatible, but MPEG2 is not forwards compatible). Are you trying to activate a 625 on your account with an EA dish installation? If so, it won't work and that's why they won't activate it.