Hello, cag.pta,
I’m sorry about it. At present, it’s difficult to solve this issue.
If you want to remove the PDFs from your iPhone, please follow the steps:
- tap on “…” which is on the bottom left of the screen.
- select the document tab
- then you are able to delete these PDFs from device, and these PDFs won’t download again.
Sorry for the incovenience.
Bryan