@Daniel9957
Yes, the App is pretty glitchy. It seems to be working better for me lately, but for a very, very long time, I was not getting all the notifications or they would be really delayed. When I called Airbnb about it, they said it must be my phone, but I have had several different phones (different makes completely) and it's been the same on all of them.
Luckily, so far I haven't had any major hiccups with guests. I did once almost check a guest into the wrong room though. I had two male solo travellers checking in the same afternoon. The first arrived and I showed him to the room, which he said was very nice. I then noticed the welcome blackboard where I write the guest's name and realised I had shown him the wrong room! It's strange that he didn't mention it because the two rooms look nothing like each other.
Fortunately for me, the room that he was actually in was bigger and better so he was not disappointed when I showed him to the room he had actually booked!" It would have been worse if it was the other way around or if I had not realised until the second guest arrived...