What is the ruling on using pseudonyms in da'wah programs, such as "Paltalk," with the aim of benefiting and being beneficial, and is it true that a da'ee (caller to Islam) must use his real name?

It is permissible to use pseudonyms on websites and forums for several reasons, among them: the users of these sites know that the name is fictitious, and this is not considered a lie because the site administrators do not require a real name. Furthermore, a person is allowed to call himself by a title or a kunya, and entering with one's real name might cause harm to some, and there might be a benefit in concealing the name.