Q: saved numbers files have disappeared

Hello MrUltraSensitiv,

If your Numbers files aren't visible at iCloud.com, you may be able to restore those files via the steps outlined below.

1. Sign in to iCloud.com.
2. Click Settings.
3. Under Advanced, click Restore Files.
4. Browse the list of files in the Restore Files window. 

Files will be removed from Restore Files in 30 days.

Get help using iCloud Drive
https://support.apple.com/en-us/HT203052

Cheers!

MrUltraSensitiv,

Glad to hear that they were there and that you've got them back!

Regards!