I tried to link my password reset page with an a href to my custom login page
Not sure exactly what you are referring to here. When you say “my password reset page”, are you talking about a page in your own application? Are you trying to initiate the password reset flow from your app?
You won’t be able to link directly to Auth0’s password reset page, if that’s what you are after. The password reset page will only be displayed after the user clicks on the link sent via email (this flow ensures that the user actually owns the email address).
If you want to use Auth0’s standard password reset flow you can use the POST /dbconnections/change_password endpoint (see docs) that takes an email address, and initiates the standard flow (pretty much what Lock does too when the user clicks on “Forgot password”).
You can also host your own password reset flow in your app if you wanted to (after the user authenticates) by getting the new password from the user and using the Management API v2 to set the new password (this endpoint), but this can only be done from a backend server (that can securely obtain a token and call the Management API v2).
Hope that helps!