After moving some mails to different folders, something went very wrong and now I can only read new mails once, as they will only appear when I sort by "unread". And once they have been read they disappear completely. I can only find them by searching specifically for them, and even then it says the mails are still located in the inbox. Please help

This is on outlook.com, the website, I'm using a Hotmail address. This happens on both the website and my iphone client.