Reverse proxy no multipart downloads


I recently migrated my Server from OwnCloud 8 to NextCloud 10. At the same time a reverse proxy had to be implemented. I don’t have any influence on the reverse proxy. On the reverse proxy multipart downloads are not allowed.

So when I try to download multiple files or a folder at once, I get an error from the reverse proxy.
Do I have any options in nextcloud to not have a multipart download, but just a regular zip?

I haven’t found anything in the Admin Manual.