I am using the Free for Teachers account. Does Canvas disable certain features in this type of account? I've tried to send my students an email with an attachment and every single time, I get "Network Error." Additionally, I've copied an old Canvas course and when I go to upload new files in Module, I am blocked. Going in through Files I'm told that here is a problem accessing the space for Storage. Is there a limit as to how much can be loaded? I'm about 26% on the storage space indicator, but I'm wondering if there is some hidden blockage to get me to upgrade (which the school won't do)?