Lost access to account with new update

Sorry to hear that you've lost access to your old account. Unfortunately this does mean that you've lost access to any and all content that was purchased along with it as well.

You will have to repurchase the season pass or dlc with this new account, I'm afraid.

I'm not entirely clear, but let me ask.

Are you saying you lost access to your original account, and made a new account?

If so, any purchases from old account will not be available to new account. To access these, you would need to recover your old account.

You can update the email the security code goes to through clicking on the link below the box for the code stating you no have access to that email. It will let you delete your old Security Proofs and add new ones but it takes 30days to update when you no
longer have access to old proofs.

support.xbox.com/.../lost-proofs

You can also change your Microsoft Account through your xbox console by going to Settins>Account> then Account Security and change Microsoft account.

support.xbox.com/.../manage-microsoft-account

Update: I got into minecraft.net via my Email for my account, is it still lost, or now that I logged into minecraft.net. could I access an play on my account again?

You can't

If you lost access to your account you have to call support or fill out the lost access to my account form at accounts.Microsoft.com