Can't edit period

[ZSilvy]

I can’t edit my perdiod. Neither touching and hold the date nor the pen icon works. 

Moderator edit: updated subject for clarity

[MarreFitbit]

Welcome on board @ZSilvy, it's nice to see you here! To add or edit a period: 

1. From the Fitbit app dashboard, tap the female health tile.
2. Tap the start date of a period on the calendar.
3. Tap the pencil icon to add or edit a period (you can also tap and hold a date on the calendar). If period predictions are turned on, the entire period appears on the calendar based on your average period length.
4. On the calendar, tap the first or last day of a period and then slide your finger across the dates to adjust the period length. 
5. Tap Save.

If you have trouble adding or editing a period, see our troubleshooting tips.

Hope this helps!