PUSH Notification Issue (Fire Tablet 8 Plus, 10th Addition)

Having PUSH Notification issues for Smartthings app on Fire Tablet 8 Plus (10th Addition).

Has anyone had this problem and found a solution for it?

Notifications for Smartthings is on in fire Tablet settings and within both apps. PUSH Notification piston in Webcore works with my iPhone with Smartthings but not my HD 8 Plus Fire Tablet.