Inviting external users to a chat is not working as described in your documentation

Inviting external users to a chat is not working as described in your documentation

Hello.

I was looking to invite external users into a chat and have found this article:
https://help.zoho.com/portal/en/kb/zoho-cliq/cliq-user-guide/cliq-chats/cliq-chat/articles/how-to-chat-with-external-users-3-3-2021

Following your article, my invitee gets a message, has to register himself with a Zoho account and has the choice to join my company or build his own company.

Could you please explain?