might be an issue with virtual-host style versus path-style endpoint
i could be wrong but your config uses virtual-host, but rclone defaults to path-style.
fwiw, i always use virtual-host style
also, do you need to add https:// to the endpoint address?
https://forum.rclone.org/t/sync-copies-everything/25087
"An endpoint represents one end of a communication channel. In the case of Object Storage, your bucket endpoint is a URL eg https://my-bucket.s3.fr-par.scw.cloud which you use when connecting to your bucket.
Note that https://my-bucket.s3.fr-par.scw.cloud represents a virtual-host style endpoint, and
https://s3.fr-par.scw.cloud/my-bucket represents a path-style endpoint.
Both formats are valid and work with any up-to-date SDK or CLI, though virtual-host style is generally preferred."