Frequently Asked Questions.
Every block explorer built by Etherscan ( eg. BscScan, PolygonScan, HecoInfo ) requires a different account to be created and hence a different set of API keys
A technical glitch may have occurred in the key creation process. In this case, try deleting the key and generating a new one
If the issue still persists after using a freshly generated key, do reach out for us to have a closer look.