Hello
If you need any help just let me know. most Envato and Motion Array plugins/templates are dated and can consist of .drp/.dra &.setting.
The main issues are the font is not on your system so shows a black screen, the fix is to select a font that is on your system.
There can be issues with the bin structure not making sense and poor instructions, if any media is included then it will need to be relinked. Replacing media is usually a case of swapping out the placeholder media for your own.
As long as you are using studio then it is unlikely you'll get a node not available error.
I am sure they will become available based on the .drfx extension for version 17.2 which solves installing and relinking but not the font.
I used to make assets for a living and will be making them for Envato & Motion Array soon based on the new 17.2 features.
Happy to help if required.