Thanks so much! I'll be sending out the letter today with the updated address. Fingers crossed.
I also can't upload a picture of my RTS. I tried but got the following message: "Could not upload attachment."

The address

Barking Dog Ent.
609 Greenwich st.
6th floor
New York, NY 10014
USA

is no longer in use, it seems.

A couple weeks ago I sent out a letter to Jennifer Tilly's fanmail address
(Barking Dog Ent.
609 Greenwich st.
6th floor
New York, NY 10014
USA)

and I got it back today with a sticker that said "Attempted/ unknown address"
so I'm guessing her fanmail doesn't go there anymore.