Amadeus API Error : You do not have permission to access this content

Question

I'm new to Amadeus development. I'm trying to develop an airline booking website. I'm using Amadeus Self service API's to get flights from searched term. Everything used to work fine, but from yesterday, if i call an api, I'm receiving error 403 forbidden, Invalid user. And I had a look into my Self Service workplace, It's throwing an error You do not have permission to access this content.

Any answers much appreciated.

Sample of my website is https://master.d3799dd2ybju3c.amplifyapp.com/.

Note: This is not the actual website, It's just a sample. For fetching airports i'm using my own data. It's not calling any backend api.

And once you please do reload the page again for good response.