Well, it doesn't matter which account you use to post here in the forum, and I see that you figured that out.
I tried to be as detailed as possible in my instructions, without driving people crazy.
You need to have a Google account. It doesn't matter which one you use, but it is very important that you keep track of which one you do use, and write down the user ID and password. Google will
will not help you find it later, if you lose it.
OBi devices emulate (act as) Google Chat clients. So, your Google Voice account needs to have Chat enabled. The way to do that is to (temporarily) use MS Internet Explorer, in your case. You need to download and install the Google voice and video plugin:
https://www.google.com/tools/dlpage/hangoutpluginPer my detailed instructions, you need to make one outbound call on your computer, using Chat. This will enable Chat for that Google account.