Thank you for your advice. But there is another reason why I worry so much.
I did not tell this until now because it will make people nervous, but now I dare.
During a live session on May 26 (or so) the chatty lawyer showed a serious face expression when someone asked about its own mistake on 6 d. 5669. The chatty said that it is "simmering" issue.
He said that the applicant should send correction via webform, but the chatty's reaction to the question and words in reply were very different from those in situations when he answered for other questions.
He asked (other) participants to send him a message when he found further legal support would be needed, but he did not do so for the applicant with the 5669 issue, I think. So his serious reaction was not for inducing someone into being his client.