Getting invalid app id hash

Hi Team

I have an existing application which I use to connect to Fyers API.

I saw there were changes because of SEBI guidelines and updated the default app details with static ip, redirect url and generated new app id, app code.

I created appIdHash in format app_id:secret_id using the online tool(as mentioned in documentation).

But I am getting below response for the validate-authcode api.
I generated sha-256 in different ways, all lowercase, all uppercase, using the values as it was provided in FYERS, all those gave same error as below.

{
    "code": -5,
    "message": "invalid app id hash",
    "s": "error"
}

Can someone help with this please.

Regards,
Kishore