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Sorry to hear you’re facing problems 
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Nextcloud version (eg, 12.0.2): 13.0.5.2
Operating system and version (eg, Ubuntu 17.04): Ubuntu 16.04 Server
The issue you are facing:
My config file contains the following:
‘versions_retention_obligation’ => ‘60, auto’;
What I think this should do is keep all versions of files for 60 days and then apply default rules.
I have a file which I edit multiple times a day. I was just trying to go back to a version from last Wednesday and the versions I can see are:
1 version from 28.09
1 version from 27.09
1 version from 21.09
Those are really few versions. Like I said, I edit the file multiple times a day and I was expecting there to be many versions from each day. That’s what I was getting in ownCloud, before migrating to Nextcloud.
I can post the Nextcloud logs, etc., but they seem to contain a lot of personal information, so I’d rather didn’t until it was absolutely necessary.
I would appreciate any input on this.