Owlette users, how did you pair the sock and camera to two devices?

The owlette sock and camera work for my phone, but when my husband tried to make an account and pair to his phone, it kicked me off the devices. I checked on the website and it says it can connect to more than one device, but we can't figure out why its only letting us do one.

Has anyone had an issue with this before? I'm asking here first to see if it's something simple I'm missing before calling customer service to figure out what I need to do.