Alex's explanation of his workflow got me exited, so I've downloaded the Penti keyboard. I installed it and set it up as the default keyboard, and it runs! Penti is written in big letters on the screen, but when I tap my 5 fingers to start it the shadows only appear under two of the fingers, and the input circles never appear.
I've downloaded Penti a couple of times and reinstalled it, as well as restarting the phone, but the problem is still there. Has this happened to anyone before? Is there some advice you could give me? Some dependency I'm missing? If you have any questions, I'll do my best to answer them. Thank you for your time. I'm using a samsung galaxy J2 Prime, with android version 6.0.1