GoPro Hero9 Power Button Stuck After MediaMod Use

I bought a GoPro Hero9 camera two and a half years ago, and around a year later, I began utilizing the MediaMod adapter with it. Since utilizing the MediaMod, the camera's power button became stuck inward. I purchased the smartphone for ₺4,700. I sent it to the approved service shop for repair. After a month, they returned it to me, reporting that the power button had popped off. The repair cost ₺9,200. The lower section of the MediaMod's second button (the one that touches the camera button) is already shaped like a nail. In summary, they are seeking ₺9,200 only for a power button on a ₺4,700 smartphone. It is simply unbelievable. Unfortunately, I cannot find someone to solve this issue.