Hello @Sherie16
whatever arrangements you make with a host to cohost their properties are between you and the host .
it's not clear on your post about what you mean when you say the host was asking you to confirm details through the app. Why did you give him access to your account.
The only people who get employment through Airbnb are staff employed by them directly.
As someone who provides cohosting services you should be aware that if a host wants to add you to their listing they just send you an invite via email to be added to their listing.
if you are being contracted by a host to provide a service you are not being given a job you are being contracted to provide a service.