So i just had a chat with DJI support.
They couldn´t give me an explanation on why it happened. They didn´t sound like they knew anything about more shell versions. I was just told that it was out of warranty, and that i could order a new one from their shop. I was suggested to contact the EU department by email, as they might have different policies in my area.
I think i´ll just forget about it, and order a new shell myself.
Customer service is very important to me. I might invest in something else than DJI next time.