Several customers have reported the sudden disappearance of snippet files stored in iCloud.
So far, we haven’t managed to reproduce this issue on our test devices so we don’t know what causes it, let alone how to fix it (should it indeed turn out to be a defect in our code).
Meanwhile, please make sure you keep a regular backup of your snippets file so you can easily restore it should it suddenly disappear.
See this FAQ item:
If you find a reproducible step-by-step set of actions that leads to your snippets file disappearing from iCloud, please do email firstname.lastname@example.org as we would really like to work with you to stop this from ever happening.
Thanks in advance for any help you may provide and apologies if our software has unwittingly caused you to lose data and time.