Corsair 12pin melted 4090 now dead

Hey guys, need your help. I bought a 12pin corsair cable for my 4090 FE (AX 1200I PSU). Everything was fine until yesterday when PC started rebooting randomly. Nothing really new to the PC but I have spent some extended time playing Diablo 4 recently.

I decided to replug the card and when removing the connector from the card I realised the pin housing has disintegrated. I tried to clean the connector and use nvidia adapter but the sockets are full of plastic so no go. Card doesn't spin up anymore. So here I am, typing this on my phone with a dead 2k EUR card with no idea what to do?

Its funny because I knew about the melting part and had made sure that the connector was fully plugged in. Also, it's not like anything melted really, it's more like the plastic on corsairs connector has disintegrated.

Card is under warranty, but I don't see how this is nvidia's ault (socket doesn't appear melted). Is Corsair going to take care of the repair? Or am I on my own. If so, if someone knows a good shop in Belgium that can replace the power connector much obliged... Thanks for any tips!!