@Inna22, @Gordon,
I've had a similar sort of experience. I can't ALWAYS be there to greet but I try to be. I assumed NOT being there was the least desirable and being there to greet was the most desirable. Accordingly I selected "check yourself in with a keypad" as my default position and stated in my listing that most of the time I would be there to meet and greet (of course no one reads that part). I genuinely thought beign there to greet would be an added bonus for the guest. Selecting the self check in also meant I "join" the work collective
It took me some time after meeting a series of rather recalcitrant guests to realise that there is a breed of guest who doesn't WANT to meet the host. they selected a listing with self check in and resent meeting the host. I also experienced a substanial number of guests thinking they could turn up 2 - 6 hours later than they stated, because there was self check in.
I decided that the sort of guest who thinks meeting the host is a massive bore ( or who has chosen self check in thinking they can sneak in an extra 6 guests) is not really the guest that I want.
I've therefore changed my check in option to "the host will be there to greet you" and changed my listing to say SOMETIMES that wont' be possible.
I personally think @inna that's where your problem might lie - I think checking in guests is great if you can manage it, but the problem arises if they''ve booked thinking is was self check in. Hope I"m making sense.
The downside of this is that I am no longer listed in the work collective ( which is STUPID as people CAN self check in if needs be, but airbnb will only let you select one option- check in methods shouldnt be mutually exclusive IMO) However the plus for me is that under my heading instead of now saying "self check in with a keypad" it says " 95% of guests gave this 5 stars for location" which for my listing at a beach suburb is more desirable anyway
Cheers
Rowena