I’ve used the IONOS Cloud Backup option for a while to back up my Plesk VM but having recently purchased a Synology NAS I’ve moved the backup solution to that instead.
Having tried (and failed) to find an article on the IONOS website on how to remove the agent (there’s an article on how to install here), here’s some quick steps after a bit of Googling.
IONOS Cloud Backup is essentially a rebadged Acronis service and the backup agent seems to be the same. After finding this article on the Acronis website I opened a SSH session and checked that the directory path listed was present on my VM which it was.
So uninstalling is just a case of running
Obviously after that you may wish to go into the Cloud Backup panel and clean up the old backups etc. so you aren’t charged for the storage.