[BUG] ownCloud refuses to upload in background

Hi. ownCloud is not uploading anything to my web server when I exit the app, despite me setting it up to do so in the settings.
I've tried:
Turning on automatic background uploads
Turning on location services (I still don't understand why this is necessary)
Turning off low power mode and waiting
Turning on cellular uploads
... but nothing has worked.
I also don't see the option for instant uploads in the app, which is strange since I have the latest version (to my knowledge)

Steps to reproduce

1.Take photo
2.Wait several minutes
3.Reopen app to check if the item has been uploaded

Expected behavior

It should upload in the background without user input

Actual behavior

It does not upload in the background without user input

Client

iOS version:
14.6
ownCloud app version:
11.7.0
Device model:
iPhone XR

Server configuration

Web server:
AWS ownCloud packaged by Bitnami
Database:
AWS ownCloud packaged by Bitnami
PHP version:
AWS ownCloud packaged by Bitnami
ownCloud version:
10.8.0-1-r70 on Debian 10
Storage backend (external storage):
Amazon EC2

If you have experienced this or know how to help, please let me know! Thanks!

No source file or test is named. Start by reproducing background upload with the reported iOS 14.6, app 11.7.0, iPhone XR, and server versions, then trace the existing background-upload entry point. Done means a newly taken photo uploads after the app is exited without user input.