Sooqr data feeds reload automatically on a daily base, and when necessary, more often. However, you can also update your data feed manually, in case your feed has changed.
Go to > My Data > My Datafeeds > Press the 'refresh data feed'-button behind the data feed.

If the structure of the feed has changed as well, because, for instance, you’ve added a new field, you have to re-identify the feed first, by pressing the ‘i’ button next to it.