As what I remember there are several bitcoin blender, like the other one was a scam site which is the .org
If you use this site bitblender.io or the bitblendervrfkzr.onion for tor then you can post it in the ANN thread of bit blender
https://bitcointalk.org/index.php?topic=436467.0 or you can contact
blender the owner of that site.
I think the .org is the genuine one, isn't it? Its the only one that comes up if you do a search for bitcoin blender. The URL of the site that I opened the account with was bitcoinblender.org