500: Internal Server Error On Organization Detail API Call

500: Internal Server Error On Organization Detail API Call

I try to implement Zoho Mail API to send email via API Call.
The problem is when I call the organization id to get the OrgId I got internal server error.
I already send email to zoho support yesterday but haven't got any reply.
Can anyone help me troubleshoot this problem or is there any other ways to get the OrgId

Will really appreciate any helps :D