I can’t access my second iCloud account

If your Apple Account is locked, not active, or disabled - Apple Support

You are most likely going to need to gain access to your account by resetting the Password. There are 3 ways to do it:

• Another Trusted Device
• Trusted Phone number used on account
• Account Recovery

If you forgot your Apple Account password - Apple Support

If you’re in the US please call  1-800-MY-APPLE or outside the US, consult the support articles below.

Contact Apple for support and service - Apple Support