About Select Environment, which is a chain setting

Did the existing Testnet in the Select Environment disappear when creating Custom Auth in the web3auth dashboard?

or, Can I use Sapphire Devnet to use Testnet?

And I’m trying to set up Testnet Custom Auth based on the contents in the link. Are Devnet and Testnet settings the same?

@bjkim Testnet is fully migrated at this point to Sapphire, so you can use that. Your users will still have the same key

If I want to use custom auth using Apple login, should I use auth0 among Login Providers as shown in the link?

It will be used in web environment.

@bjkim Yes, you can use Auth0 to setup Apple login for web too.