If a day has been completed and needs to be reopened first make sure you are on the correct project and date. That date has to be completed in order to reopen it.
Mobile (Scroll to the bottom):
Once you click Reopen Day there will be a popup confirming that you want to reopen the day, simply click Yes and the daily report will be Reopened.
Please check out these related articles:
- What does completing a day do
- How to complete a daily report