During the part of the installation, where it says it has added "com.paragon-software.installer" (or something similar) to Full Disk Access, found in Privacy settings, and I just have to tick the box next to this to enable it.
It has not added "com.paragon-software.installer" (or however its called), so I'm not able to tick the box and enable it.
I've tried searching for it on my Macbook Pro running 10.14.6, so that I can add it manually, but nothing comes up.
I've also tried searching for a terminal command to add this process via that, to full disk access but a quick look on google says that there is no such thing as a terminal command to do it -- You must use Privacy settings apparently. Please correct me if I'm wrong on this!
I did purchase a license for this and it looks like I'm not going to be able to use it!