Can't use Minions

[Doozer]

I just wanna make sure you're not selecting that from a retainer or something right?

There's the option to 'add to saddlebag', so that means the chocobo saddlebag is currently open. I believe when you're doing that you can't use items?

Make sure you're not in a retainer, saddlebag, have your glamour plates open, etc.... just in case, make sure only your inventory is open when you try to use it.