Thank You very much Bram Pribadi. It worked on Teclast x98 plus 3G (A6C9) model too. Great!! I also got in to the same problem by messing with the drawing and input options in Developer Options section. Better to leave them untouched.
By the way, Does any type of touch pens work in Teclast x98 Plus tablets? Passive or Active? Like to do some note taking on it.
Thanks!