Cloud restore makes it impossible to delete files from sd card

[MauriceKay]

I try to delete all the pictures I have on my SD card. I just select all of them and click the trash icon. When I finish, I see an empty folder, as expected. I make a new photo. And then I reboot my mobile phone. When I enter the album I see all the photos I deleted, and the photo I created after the deletion is missing.

I unchecked cloud backup, but still have the same problem. I can erase all photos I have, but after restart they still return in seconds.

Where are they stored? Can I erase them manually?

Phone: Sony Xperia XA1

Android 8.0.0

[Uliwooly]

@MauriceKay 

try this

settings > apps & notifications > all apps > album > storage > clear data > restart the phone > check again.

[MauriceKay]

Did not work. Thanks anyway.