Q: i cant remember my password for the encrypted backup to startup my new iphone from backyp.

There is no way to recover your information or turn off Encrypt Backup if you lose or forget the password.

From Apple Support > About encrypted backups in iTunes - Apple Support

This is the same article you linked from to post to this community. Your not addressing Apple here. We're all users just like you.

Sorry friend there is nothing we can do to help.