Problems with external Storage

Nextcloud Version 11.0.2
Operating system and Version Debian 8.7
Apache or nginx Version Nginx:
PHP Version 7.0

my external storage in nextcloud wont work fine, i can move files to the external storage, but moving out or delete files didn´t work… and when i try to sync my folders with the client i become a error with: operation canceld or connection closed.
also changing from cron to webcron is not working.

The output of your Nextcloud log in Admin > Logging:
https://cloud.sunnyteater.de/s/y5fezrAyiROWXbX

The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
https://cloud.sunnyteater.de/s/9PBHGQSO73mhpcn

Nginx Configuration = Default, with the personal changes like root path and Domain etc.

When u Need more informations, please tell me.
Hope somebody can help me…

EDIT:

Okay, i know that must be a problem with the encryption tool.

Bad signature, did you restore a file? Restore the database? Manually change the data-folder or filecache-table?

switched from owncloud to nextcloud and then to nextcloud 11
and then i changed the data directory.
is that a problem?

The change of data directory is supported in the most recent versions. Perhaps there is a problem with that in the encryption app @bjoern ?

I have no Problem to do a clean install. Bu i Need to know if the Problems with the external storage Comes from this tool.
I need to know if i can enable it in the new cloud again.

I was using the encryption app in earlier versions and stopped using it because all problems I had were related to this app. Before using this app, I would run a proper test in my environment. If it works, test full backup and recovery strategy.