Chat on website not functioning

Ones you allow chat on website settings, the chat widget /popup is not appearing ones someone gets on your website.

I am using erp next version 12.1.18.

Anyone else who has seen this issue?

PS: I have enabled the the chat, assigned welcome message, attached users who will manage the chats together with the time when chats should be active.

i did an upgrade to ERPNext: v12.2.2 (version-12) and it is now perfect.