API Access has been disabled

[cupid_dev]

Hi,
I'm using Admin API and run smoothly last month, but I got error when getting any data form API.
I tested on Postman the API request and got the error "API Access has been disabled".
After uninstall and reinstall the same result.
Any solutions?

[cupid_dev]

I achieved solution by myself.

After logging in by owners account and reinstall custom app and succeed access data.