I'm sure you could. I guess you just need someone to contact him for you and get you into the admin board so you can do it. I've had a few boards and have one right now that I enabled it on.
This board seems to have undergone a change since it was created where there are now, new codes. I've seen places in old threads where there had been embedded videos, before, and different emojis as well and they no longer work. That would be because something changed with the codes or settings for attachments, etc. And then it depends on how much storage is allowed on this particular board, too. But you know all of that.