Error: The API Key entered is invalid!

Hello,

I installed Akaunting locally on my web host using Softaculous Installer.

I have a challenge with the API key, when I use same API as what is in my dashboard (https://akaunting.com/dashboard) I get the below error:

Error: The API Key entered is invalid!

Kindly advise what could be the problem, I have reconfirmed the API key again and again.

Regards;
Zayyad