Max Number of Arlo Q cameras on one account?

[steambrite]

I currently have 15 Arlo Q cameras hooked up to my wifi and pay for 15 camera recording level of service.  I only purchased 15 cameras because I have never seen any notes that I can load more except when I am on my Devices tab inside my logged in account, the bottom of the screen shows a default "Add Device."  I do not want to purchase a camera and then find I cannot install it on the same email address/ account.   I use the system to take 1080 still shots instead of video since I do not think neither Arlo, Specrum 50 X 5 speed, nor my wifi system could handle it.  I would like to add a few more cameras.  Please let me know if this is possible. 

[TomMac]

To go above 15 cameras, you would have to upgrade to a business account...

With a business service plan max cams is 40