Alldocube IPlay20 don’t work

Help me.
At first, it was operating smoothly, but
I got sick today.
After it started up, it was suddenly restarted,
After that, the restart screen appeared and the restart screen disappeared.
The power does not turn off when I press the power button. Even if I press the power button for a long time, the power does not turn off.
“Vol+” + power button, “Vol-” + power button, nothing happens,
The restart screen appears, and then the restart screen disappears.
What should i do?
Please let me know if there is a way to deal with it.

me to – but no answer…