Home internet connection

All right boys and girls, I’ve come up with a solution.  Albeit with some questions.  If I Disable ‘AP Isolate’ on the Arris AP I’m now able to connect the SanDisk Connect Wireless Stick to my home network.  From reading online, the AP Isolate function prevents multiple users on the network from accessing each others devices.  So I can see how this would be a problem when connecting the Wireless Stick.  But, I have an HP Wireless Printer connected to the network which can be accessed by multiple devices and it works just fine with this function ‘Enabled’.  So I’m a little stymied why this would be the issue?

Additionally, one minor but important point.  Some where in the SanDisk documentation it should be stated the router must be operated in WPA2-Personal Encryption mode (although this wasn’t the problem I was having).

Thanks!