@thanksmister
After following this thread I have managed to disable the lockscreen on my 7" 5th gen Fire Tablet. Having used the old WallPanel until now I tested that, and everything was working fine so far. I then chose to switch to your version, but encountered a problem.
I worked through most of your beta-releases (is there a reason why you don’t publish APKs of the stable releases?). The latest version that is working for me is 0.8.1.7.
Every version after that seems to work fine at first sight, but fails at waking up the screen. I am not sure if the device crashes or if it’s just the screen that won’t come back to life. But the only thing I can do at this point is holding the power button, which eventually leads to the device booting again. Unfortunately a sideeffect of disabeling the lockscreen is the loss of ADB. For that reason I don’t really have a pointer what the issue may be, and if the the device is crashing or if it’s just the screen that does not light up.
Anyhow, the older beta is working, so I don’t ask for any bugfix here. Just wanted to notify you that such an issue exists with those old tablets, and the source of that problem was introduced after 0.8.1.7.