Rule machine - as per the app developer, this app is no longer available for new installs, distribution, or support

Can someone help me with this rule / issue I’m having with false positives on rule machine (and SHM for that matter) thinking my door is left open for 3 minutes even though it’s not. I know it’s not a problem with the contact sensor itself, because if I check the sensor under Things in the mobile app, under recent activity, it shows accurate open and close times. It will say that it’s closed even when I get a “door left open” notification. Sounds like some scheduling issue on the 3 minute delay timer.