Hi @pchristou,
Could you please share more details about your scenario, post a picture to show me how you configure your app?
Do you want to display the date in a Label and save it to your list?
1). If you want to display the date picker selected date within a Label, set the Text property of the Label as below:
Text(DatePicker2.SelectedDate,"yyyy-mm-dd")

2). To update the date, as @StalinPonnusamy said, if you have an edit form, you should attention how you set the data card Update property.
if you have a single date picker and a save button, you should write the Patch() as below.
Whether to switch it to text depends on the column type of your date column:
a). if it is a Date and time type, you could save it using DatePicker2.SelectedDate,
Patch(
YourList,
Defaults(YourList),
{
DateColumn: DatePicker2.SelectedDate
}
)
b). if it is a Single-line-of-text type, you could save it using Text(DatePicker2.SelectedDate,"yyyy-mm-dd")
Patch(
YourList,
Defaults(YourList),
{
DateColumn: Text(DatePicker2.SelectedDate,"yyyy-mm-dd")
}
)
Hope it could help you at some degree