upload (transfer) with multiple accounts needs enhancement

Steps to reproduce

1. create 2 or more nextcloud accounts to different servers
2. define one of them as target for the autoupload
3. take pictures

Expected behaviour

The upload should start (to the correct account) independently of the currently selected account

Actual behaviour

No upload until the correct account is selected and NO hint that this is (could be) the reason for not uploading.
nevertheless the number of uploads is always displayed - a click on the "File" icon should open the transfer window.

Screenshots

If applicable, add a screenshot showing the issue.

Logs

If applicable, you can post the iOS app or server logs (removing any sensitive information).

Reasoning or why should it be changed/implemented?

Environment data

iOS version: e.g. iOS 14.5.1

Nextcloud iOS app version: see More > Settings
3.4.2

Server operating system:

Web server: Apache, nginx

Database:

PHP version:

Nextcloud version: see Nextcloud admin page
21.0.1 or 20.0.9

Start by reproducing the autoupload flow with two accounts and different servers, then trace how the selected account controls queued transfers and how the File icon opens the transfer window. Done means uploads use the configured target account without requiring it to be selected, and the transfer status remains accessible with a useful hint when needed.