Warning: This release is unsuitable for servers in production, it should only be used for testing purposes

I do not own ItemsAdder so I cannot test the plugins together at the moment.

When Orestack is enabled you should see this message if ItemsAdder was found:
To use a block from items adder in a generator or structure use:
Or select a region and use the /orestack structure save <file-name> <structure-name> command

If you find any problems please report them in my discord.