8600 Won't Stay Registered With SmartLink

I removed my 6600 and replaced it with a recently received 8600. Same connections to the network, matter of fact it's the same exact cat 5 cable that was plugged into the 6600.

I'm having a couple issues:

1 - When I bring up smartlink in order to register the rig, it takes several seconds for the radio to be populated into smartsdr setup window

2 - I click the blue smartlink setup then the blue register button. It takes several seconds to connect smartlink server

3 - I push my foot switch to register the radio, which it does successfully.

When I'm done, I close SmartSDR, restart SmartSDR and its asking me to register the radio again. I don't think I need to do this more than once, correct?

I did not unregister the 6600, could that be the issue?

Rich - N5ZC