Collaboration - trouble adding a contact

[GreenWire]

I’m trying to invite a friend of mine to collaborate on a cloud project with me. I’m on the most current version of Ultimate, and he’s on 19.10.0.494. I’ve found his profile under Find Talent, and have invited him through that, but he hasn’t received anything. I then sent an email invitation, which he received, but after he downloaded Avid Link he’s still not getting anywhere to accept my invitation. We tried it in reverse, with him inviting me, and the same problem happened, I don’t see anywhere to accept his invitation, and he’s not showing as an available contact. Any suggestions?