My Disney Experience - Linked accounts problem

[Brandis]

I'm doing all the planning for our Disney trips but I thought it would be nice if my friend could check out his informations as well, so I sent him an invitation to manage his own account in My Disney Experience. I had to tell him to accept the invite otherwise he just would have forgotten and of course he never went back in after that.

So now I have the problem that I can't manage all his stuff directly from my accound but always have to log into his account if I need to do any changes to his Magic Bands, tickets etc.

Any way I can get all this back into my account?