On the calendar, normally the next scheduled watering date for each zone on flex shows a green drop. Flex looks 2 weeks out into the future, so no green drops beyond 2 weeks, but you should see one drop for each day that one or more zones are watering. You would normally also see a blue drop for each day with a fixed schedule. Check the zones under the 'My Yard' section to quickly see the next planned watering date for each zone, and also check the moisture levels for each zone as you have done. You can click on the right arrow (next to the Aug 4) on the moisture level graphs to see the next weeks predictions for each zone. Yon can also click on the right arrow on irrigation to see whether the irrigation from fixed or flex. Your apparent missing watering dates might be due to the 10 day fixed schedule ending soon. The temporary fixed schedule might be mixing up the zone scheduling logic.
If rain is forecast, the flex forecast might think the zones may not need watering until after 2 weeks from now, in which case you will not see the next watering on the calendar.