Facebook has already begun making early changes to attributions for some ad accounts ahead of iOS 14's new privacy measures.
When changes go into effect, we will no longer support offsite web conversion metrics over the following attribution windows: 7d_view, 28d_view, and 28d_click. These windows will still remain available to access historical data — data prior to when the changes go into effect.
We recommend updating all of your Revealbot rules that use these already, or soon to be, deprecated attribution windows to maintain functionality.
To edit your rules in bulk you can use Bulk edit option. It becomes available when multiple rules are selected.