AirDroid doesnt stay connected

I am a new user of AirDroid. I like it alot, i use it only to send text messages from my computer. I use the free version with my note 3 from Sprint. How do i set it up, where it stays connected to my phone? I find it disconnecting from my phone all the time.

Hi, please check this link to see why AirDroid disconnect after while: http://help.airdroid.com/customer/porta ... r-a-while-