iMessage won't login

Hello all,

I have a Mac Pro 3,1 and the interface card when out from a power surge. The rest of the machine is good. I bought an Insignia USB to Ethernet adapter as that was the quickest fix. I installed the driver and the network is connected. However, iMessage won't login. I get an error, "The username or password is incorrect" and confident it is correct as I use it often. After several tries, I see it login for a split second and then another error, "An error occurred during activation" I had suspected it was for some reason still trying to use en2 and the new adapter is en3 but not sure about that anymore. I am logged into my iPad and iPhone and using it currently. The MAC was working prior to the ethernet change. Any thought? I appreciate it!

Thanks,