I have a SP2010 site with a list that records each persons weekly update. If the personb doesn't update their entry after 7 days I want them to get an email. I created a reminder field that calculates the reminder date from last modified date. Then use a workflow to check that the Reminder 7 day date hasn't passed.
Example: Last modified date- 01/04/2015 Reminder7d date - 08/04/2015
Workflow - set to start when an item is updated: If Current Item:Reminder 7d equals Today Email username
But it doesn't seem to work for the 20 items I have in my list? Any help would be appreciated.