How do I write to tech support if registration via the website does not work?

Hello. Asked this question: https://www.designwall.com/question/pagination-doesnt-work-dw-question-answer/

In response, he was asked to send a login and password from the site. But I do not know how to send it, because authorization via Facebook / Google / Twitter does not work on this site.

If you register an account via email, you do not receive account confirmation emails.

Tell me, is there any alternative way to contact technical support to transfer access?