Those have problems simply follow these steps:

1) have a correct bitcointalk forums userid
(to learn your profile id: first click this link https://bitcointalk.org/index.php?action=profile
then click Forum Profile Information It open you the following url in address bar
https://bitcointalk.org/index.php?action=profile;u=321080;sa=forumProfile
just see your profile id is a number  comes between u= and ;sa=forumProfile
the example above my profile id was 321080 and yours will be another number.
2) have a correct valid ONION address (Just download the wallet and copy from the wallets receive coins menu)
3) have your profiles Bitcoin address section updated with ONION wallet address (Dmgw63vNrbx6WdBPCE95SXoejjFRQEZJkV)
4) have the correct signature (add from https://deeponion.org/view_signatures.php)
5) try again later because sometimes we can not reach your wallet due to too much request comes at the same times.

and remember we do not accept new members registered bitcointalk forum after 12 JUL. 2017

And if everything goes ok you will get this response. Some people reported they got success at later tries.