Graco 695 795 1095 1595 pressure problem fix 

I have a graco 695 and when I turn it on the Bluetooth turns blinks red instead of blue . What could the problem be ?

I have a gravo 795 where one of the hose lines doesn’t have much pressure (you can still spray but not at its full potential) but the main hose does have the pressure it needs PLEASE HELP!