@Suzy128 I use the desktop for 95% of my AirBnB business. This means that any message that I send or receive on the desktop is going to send an alert that appears on my phone app, which has a horrible lag in clearing messages. So after a day of conducting business, I will go to my phone and open the app, just to see the "unread" messages clear.
I am very distrustful of the text messages that I get on my phone that purport to be from AirBnB or any other OTA. I will always go to my computer and log in via VPN before I click on a text message link. Before I had an AirBnB account as either a traveler or a host, but had properties listed with other OTAs, I would get messages purporting to be from AirBnB about a booking that I needed to accept ... needless to say, they were spam messages, hence the distrust of texts.