Keyboard set to English

Ki
1

I've been browsing the internet for hours and still can't find an answer. I bought an external keyboard for my Samsung galaxy Tab 6 lite, but a lot of it doesn't work properly. The @ sign is no longer together with the Q on a key when I type ü, ä, ö, come [';. Even after I wrote to Samsung support, they said that I should change the keyboard settings in my mobile phone to German. Unfortunately, it didn't work, just as little as key combinations that should set my keyboard to German. Because it is already set to German - when I connect it to a laptop or computer, it works perfectly. So it must be because of the settings?

Incidentally, the keyboard is not original from Samsung and does not work on the tablet or on my Samsung Galaxy A40 mobile phone.
I'm on the verge of desperation, I hope for help!

Cl

Can't you just reset everything?