Integrate Avaya with Zoho CRM

Hi, i'm trying to integrate Zoho CRM with our avaya telephons. And we finish the all steps of the doc ( https://www.zoho.com/crm/help/zoho-phonebridge/asterisk-avaya-elastix.html#frequently_asked_questions) and we get a error message : "licence check faild - contact Zoho Support"

See atached file.

Thanks for your help.