Regarding some pages that is not being exhibited, the offset issue seems like a bug. I am not sure if the query parameter is actually "offset" but I used "from" since that is what the link does. Eitherway, it should probably be reported as a bug. Regarding not being able to see things past Oct 7, that is because limit isn't high enough. The page will display up to n days ago or m edits; which ever is reached first. This means that your wiki has had more than 500 edits in the last 30 days.