@StudioMack "Can not send request to iStripper server because content of request header is missing"
The script relies on other 3rd party support apps. to build the command to send to the server.
These can often be blocked by your security software,
If that happens, the composed command will not have all the needed parts to send to the iStripper server.
make sure your security software is not blocking these 3rd party apps.
I use the Bonus downloader and the Preview Downloader many times.
It / they work well to keep my collection up to date.
even when I only have 10 cards to update.
There were version of the iStripper app that silently deleted all the previews from cards in my collection.
The Preview downloader worked well, when I need to re-download ALL of my previews again.