Hi, I have the exact same issue as described above. I had one accordion which I have been using for months without issue. I had HTML in the WYSIWYG editor and an apostrophe was breaking the code. I tried to escape the character with a backslash and the whole accordion disappeared and I see no way of retrieving it. I have contacted my hosting provider to see if a back up can be retrieved but it does appear that certain characters can break and wipe all content.