I think I found it. When you have a phone account, you establish a username that is unrelated to joining the community. When you join the Jive community, the username associated with your phone is the one that you can use to login on mobile, not the username you established for the community.
Which account are you going to use? You should really only have one account and if you want me to approve you as a connection I am only willing to think approving the one account. I am very picky in who I allow as a follow connection in the first as well.
I'm most definitely NOT a VZW employee. If a post answered your question, please mark it as the answer.