The latest version of Mac OSX, Catalina, introduces a new round of security settings which are causing issues for our products. Downloaded apps now need to be officially “notarized” by Apple before they can run on your computer.
At the moment our products are not notarized, although they are digitally signed to ensure that they have come from a known Apple certified developer.
We are currently working on ways of getting our products notarized but are experiencing some difficulties as we deliberately produce our software using some older technologies. We do this to allow teachers to use our products on old versions of Mac OSX. At the moment we are caught in a bind between supporting teachers using old computers (of which there are many) and supporting teachers using the latest Macs (of which there are comparatively few).
You can, if you wish, use our current versions on Catalina but it requires some extra steps to authorize the products, as well as ignoring some overly-dramatic messages from Apple. The full (Apple produced) instructions to do this are here.
We will continue working on producing a version that supports all of our many users.