tablet shows after start the start code, which I dont know.

after starting, the sqare number field is offered on the screen and a start -combination required, which i do not or no longer know. how can i give in the right code, and from where can i get it? the user manual was in chines which i do not understand, and no technical chat offers a valid solution. do i have to make a total reset and how does it work? all offerd advises to this have had no effect. --- neither with the reset whole, where to put a needle in, nor any tap-combination of loud-button and start-button.

the tabled only showed a script that it was in security mode ( abgesicherter modus) but no field with a reset option appeased on the screen.

can you give me right advise to that problem?

may it be due to a wrong secutity.-app on the tablet and how can i remove it. a plug-in to my main computer works, but the software items on the tablet are abbreviated and coded in linux.- manner.

can i load an additional programme for start and erasing number -passwords on the tablet from my pc, which is linux as well and which one woud it be?