iOS client app: restrict to WIFI and upper bound for file size

Is there a way within the nextcloud app for iOS to limit up/down-loads to WIFI only?
I know that you can set this outside of the app so the iOS keeps it from downloading when it is not on WIFI. The question is whether there is a way to configure this inside the nextcloud app.

Is there a way to limit up/downloads to files that are smaller than a configurable file size limit? This would be to avoid the i-device storage to be cluttered with really big files.

(Certainly, as a work-around, the user could move those files to folders that are then kept from being synced, but this is a different quality.)

Yes, there are options. See details for automatic upload.

No, this is not possible at the moment.