Old iPhone I cannot login to Screen Time to wipe
I purchased a new iPhone last week. I backed up the old device, restored to the new one as I have always done. After a few days and when happy to proceed I tried to wipe my old device.
For some reason I cannot wipe it due to the Screen Time password not working and/or I cannot reset on this device. I can on the new device, but this does not translate across.
Any help would be appreciated. I have searched for possible fixes but these are not helping me.
iPhone XS