attachment unavailable

So I am sent a message on Facebook Messenger and it consists of a note from Facebook saying; "Attachment Unavailable". The conversation on Facebook then goes like this: I send a message to the sender saying; "Attachment Unavailable" A message comes back; "The Dog One" I reply; "Unavailable means that I CANNOT see it - so saying the dog one unfortunately does not help ?" I get THIS reply; "Perhaps you need specs?" What should I reply back? … [Read more...] about Attachment Unavailable