My name is***** am sorry to hear that you are having this issue. I will be glad to assist you with this. That is the accessibility feature.
Try these steps please.
To turn off Explore by Touch and/or Voice Guide (Screen Reader):On the kindleSwipe from the top with two fingers separatedTap on More twiceTap on Accessibility twiceExplore by Touch - turn OffVoice Guide - turn Off
Okay, it may be a glitch in the firmware and can be resolved by a forced reboot, then your kindle will work normally again. Slide or press and hold the power switch for 40 seconds, then release. Then try the above steps again.
Swipe from the top with two fingers separatedTap on Settings twiceTap on Accessibility twiceExplore by Touch - OffScreen Reader - Off
I will continue helping you.
Which model is your Kindle?