back up now" not selectable
iPhone 5s - iOs 12.5.1 (updated 13.02.2021 h.17.16)
iTunes 12.11.0 (just updated)
Successful iTunes diagnostic tests.
ITunes "sees" the device, but in the backup screen the "back up now" button is not selectable. Instead, the reset button is.
Last successful backup: 13.02.2021 h.21.48
How can I solve??
Windows, Windows 10