It takes a while to heat up, but okay! And after I opened it and used it, I saw that the lid is crooked and does not fit properly on the pot; there is almost half a centimeter gap!

I have purchased the 20cm saucepan, the 28cm pot, and the 30cm frying pan. I have an induction cooker which is theoretically 30% faster in boiling time. With other pots that I have, I have indeed seen this difference. I bought this set to have an additional set with 100% compatible (theoretically) devices with the cooker. So, this series is aesthetically pleasing, its non-stick characteristic is indeed good, but...
It takes 1 hour to boil 1 liter of water! I'm not saying this for exaggeration! It's measured with a stopwatch! I put 1 liter of water in the saucepan, and after 45 minutes, I see the first bubbles. It takes another quarter to reach the boiling point! A total of 1 hour.
Obviously, something is not right... with the simple devices I have, 1 liter of water boils in 1-2 minutes... Maybe, even though they claim to be suitable for induction cookers, they are not. I don't know what the problem is. The only thing I know is that the whole set was a disappointment...
If you have an induction cooker, think about it again!