How to Delete Wifibooth Photos in Google Drive

[sustainednote]

My 2 iPADs upload photos to Google Drive using WifiBooth. It's been a few years of them building up and I need to delete them to make space on my Google Drive. But when I delete them on my laptop Google Drive, they seem to still be there on my ipad. So I deleted the source files on my iPAD Photos app and then delete them in my Google Drive. But they still seem to be showing up. Is there a backup happening that I don't see?

[tim]

First, thank you for using Wifibooth for years, that is nice to hear

Wifibooth isn't doing any backup, no. But I'm guessing maybe you have iCloud Photo sync or iCloud Photo library turned on, and these photos are backed up from your camera roll (photos app) to iCloud?