Hi there @Anna2386 ,
Thank you for reaching out. When you are unsure of notifications or incoming messaging around your Airbnb account (and any other account too), you should consider changing your account password at your earliest convenience. Should anything be amiss, this will protect your account promptly, as well as allow our security team to investigate further without any potential jeopardy to yourself.
If you could please change your password and let me know if you still are receiving the notifications, I'd be grateful.
Thanks,
Stephanie