ᐅ Dåtid oven does not turn on

Dear IKEA fans, I am new to the forum. I apologize for my German, but I am trying my best 🙂 . So, I bought a used IKEA Dåtid oven. The previous owner never actually used the oven, and it was unused for a long time. I have been using it without any problems for the last two months. A friend of mine came by and was playing around with it. Since then, it no longer turns on. I have tried everything, including what was in the user manual, but unfortunately without success. Does anyone have experience with this oven? Can someone help me? I would be very grateful for any possible assistance.

Thank you very much and best regards
Hissam

On the clock, there is a window on the right for the cooking time, where you can set the minutes or see a bell icon when the timer has finished. You need to turn one of the small adjustment knobs on the right—I don’t remember if it’s the upper or lower one—until you see the "hand" symbol, then it works.