Use AirDroid on a unrooted android device

hey whats up guys,
I have a Note 4. That's not rooted. How do I get the functionality of the application?
Everything I try doing on the web is indicating that I need to allow superuser on the device, where do I find this option.
I have already paid for the premium services.

My Airdroid has never requested root access.

hey whats up guys,
I have a Note 4. That's not rooted. How do I get the functionality of the application?
Everything I try doing on the web is indicating that I need to allow superuser on the device, where do I find this option.
I have already paid for the premium services.

What feature you are using? Screenshot?

AirDroid requires root permissions if you want to use Screenshot feature on AirDroid web. You need to root your phone first and then give AirDroid the permissions (using root managers like Superuser).