/invite /inv (Name)

[Sida]

I saw that, which made me think it was a thing, but I've never been able to do it successfully (I'm on ps4 if that helps).

Are you sure you remembered to put the player name to quotation marks? The macro/text command interface doesn't usually like multiple word parameters where one parameter is needed, even if it's obvious it's be many words anyway. Quotation marks fix that making it a single word, technically speaking.