I have a relatively new Nexstar5 SE with the SkyPortal module plugged into the Aux port. This is my travel scope.
The pad is a Samsung Galaxy Tab-S, the phone is an iPhone 7. Both exhibit the same behavior and the on-screen buttons sometimes feel 'sticky' or slow to respond.
The reason I was trying to use "connect" rather than "connect and align" is that I was using the "one star alignment" with the HC and thought it would work the same in SkyPortal and WiFi, which it did until I hit the 10 alignment point limit.
Your book should arrive in a couple of days.