How to purge data in group libraries
I reached the 6GB storage limit. I locally removed all pdfs above some size, so my local storage is now 5.6 GB. I would like to erase the server storage by this reduced local version. However when I use the "Replace Online Library" command it starts syncing and stops immediately saying my quota is overpassed. What to do ?
If you're saying you deleted files on disk, that has no effect on your Zotero library, other than making the files unavailable locally.
Do not use "Replace Online Library" — it's not at all appropriate here.