I am confused and a bit upset.  I private collection of mine has up and vanished completely. It was one of my biggest collections and I used it to organize a lot.  I know it is not some issue of a security breach because I have two step authentication. No one else has ever had access to my account. The last time I was online was maybe two months ago. I had seen the list perfectly fine before, but now I log on and see that's is isn't there.  

My lists are very important to me because they're the only way I have been able to keep track of what I've played and currently have queued on my computer. Please tell me that this is some sort of bug within the website and an issue that can be fixed. I don't understand how or why my collection vanished into thin air but it's very upsetting.