Ok... I discovered why I have conflicting ETH addresses in the subdomains of wings.ai.

First when I registered at the fly subdomain, there's no seed or ETH address assigned. And then when I registered at the alpha subdomain last year, I was given a seed phrase in which I still have now. This seed phrase is where the ETH address you see in the fly dashboard was derived from. To see the private key for this, go to https://www.myetherwallet.com/#view-wallet-info enter the Mnemonic Phrase and unlock. Select the custom HD derivation path which is a Consensys/Eth lightwallet path. Input the below path:

Now because I also participated in the owl test forecasts, I remember I was required to create a new account. Using the same email address, a new seed phrase was generated and thus a new ETH address. This new seed phrase also changed the ETH address for the alpha subdomain. However, the eth address in the fly subdomain did not change.

That's why there's a conflict. Anyway, just keep both seed phrases.