MS Bookings bugged

Hi,

before the summer i had setup a MS booking calender for booking of the company car.
Back from holiday the whole MS booking page is super bugged.

I cannot delete employes, cant change any information on the employes, The Company logo cannot suddenly load? (Se attachements) 
And the employes that i have added as admins is suddenly showing RED collour and it say cant fint the employe in your organisation..

My other calenders that i have played with cannot be shown or opened. 
I cannot create any new calender bookings...

Please help

Regards Stian