Register OneDrive for Business account in Air Explorer
First, you have to create an account in OneDrive for Business.
If the OneDrive for business account is inside an organization, it needs to have administrator rights to be able to connect with 3rd party applications or the administrator must give the user account rights to use 3rd party applications.
Follow the steps on the link below to grant the rights:https://support.office.com/en-us/article/Turning-Integrated-Apps-on-or-off-7e453a40-66df-44ab-92a1-96786cb7fb34
Then, you can enter your password and user in Air Explorer and start to work with it.