Calendar issues

Hello! I use FB through my Google account on my Android app. I routinely have issues with rescheduling workouts on my calendar. Most often, it appears as if I have successfully rescheduled...only to find that it has defaulted to the original schedule when I've logged back in.

I work rotating day/night shifts every weekend, so following the calendar every day is a huge challenge. I love my FB workouts, but I desperately wish I could just choose the next workout in the program sequence when I am ready to do it. Is this possible?

Please advise...thanks!