Remote retentional backup-restore solution

I have contabo object storage S3, dont know if its compatible cyberpanel with that s3 but getting error like


Will first initiate backup repo..
Fatal: create repository at s3:s3.amazonaws.com/netgen.gr failed: client.BucketExists: The AWS Access Key Id you provided does not exist in our records.


Repo s3:s3.amazonaws.com/2353f42c14eabd2b0904db23c46cd3c7 initiated for netgen.gr.
Meta data is ready..
Backing up databases..
Fatal: unable to open config file: Stat: The AWS Access Key Id you provided does not exist in our records.
Is there a repository at the following location?
s3:s3.amazonaws.com/netgen.gr
. [5009].

There is no option to add a custom endpoint or bucker, is there any solution for that?

Welcome and Happy New Year @netgen

is not supported yet. Suggest it here CyberPanel Backups v2 Proposal