@Guy991
We more or less solved that problem by establishing WhatsApp contact after they book it. It's much simpler, faster, and more difficult for them to ignore. And virtually all guests we've had enthusiastically prefer it.
Plus, it gives us some indication of whether they're still on the plane or have landed prior to their arrival. And it makes it easier for guests to contact you if needed ("we're arriving late" or "where can we buy fresh fish"), and you can freely send photos and Google maps links (which they can just click and go), but also links to attractions, restaurants, and shopping in the area if they seek advice.
Note: It's always preferable to use the Airbnb message system (for historical reference) when dealing with "problematic" guests, in case you are later forced to interact with Airbnb support (not recommended ). But careful screening of guests prior to booking can greatly reduce the occurrence of problematic guests, and consequently, the need to interact with Airbnb support.