Well, another TB as good as gone.
I had almost this exact same thing happen: I placed a new TB in a "hotel", picked up by someone new to the hobby, this was his first find, first trackable...and he never dropped it off or responded to my messages. He lasted one day.
That was 6 years ago.
I just found a suitable replacement, made a copy of the tag, and am about to release it again.
I was honored to have found your memorial TB.