Client Credentials Error

Hi plugin creator,

Thanks for the fantastic plugin. However, I’ve got stuck somewhere in the code. I’ve surfed your previous support URLs where I came to know about the explanation done on this support link: https://www.ads-software.com/support/topic/how-to-get-access-token-with-oauth/

I’ve done the very same way, and I’m getting an error, thus looking if you can help me resolve that.

Error: Array
(
[error] => invalid_client
[error_description] => Client credentials were not found in the headers or body
)

Thanks in advance.