This is the problem, it’s not possible to upload to Host Europe over FTPS using RapidWeaver’s built-in publishing. You have to use SFTP instead, however not all Host Europe plans offer SFTP, for example their base/starter plan does not.
The only solutions are to either upgrade your hosting plan with Host Europe so that you have SFTP, change to another hosting provider, or use a third-party FTP client to upload your site to your current Host Europe account.
There is another thread here that goes over it in more detail.