Unfortunately, it does not sit well on the stove.. I don't know if it happened recently or if it was like that from the beginning. I have had it for about a month. It's a shame because it's fine, I will try for a replacement.
And finally, they inform me that there is no warranty, in the request I sent them.. the conversation is as follows...

Good evening. In early December, I bought a red Pyramis pan, which I noticed does not fit well on the stove. How can I make an exchange?
Their response is...
The problem you are experiencing with your pan is due to a sudden change in temperature. This means that either after use, you washed it without it completely cooling down, or you placed it in a very high temperature while it was cold and without any food on it. Both reasons I mentioned have the same result: the bottom warps and does not fit on the stove. Unfortunately, pans do not come with any warranty because damages that do not exist from the beginning are caused by improper use, and for this reason, no exchange can be made. However, we would recommend contacting the dealership to see if they can provide further instructions for the proper use of the cookware or possibly a solution. The phone number is: 2394056823 and you will ask to speak with Mr. Giannis.
.. On 200224, there was a replacement from Pyramis.. after difficulties and struggles, there was a replacement from Pyramis... with the same outcome.. it warped again