Ftps help

I am trying to connect to my site from my laptop to add some photos to my site. using OS X el capitan I go to connect to server, enter my credentials and then connect just fine, i can view all the files there. but it is not letting me edit anything. I can’t add folders or files. But I am able to add folders and files through the Transmit app on my iPad.

The built-in FTP client in Mac OS X only supports read-only access. You’ll need to use a downloadable FTP client (such as Transmit) to edit your files.