Congrats on your new pedal! In order to share Max algorithms with your Core, you must make sure the pedals are registered to the same Eventide account. Then when you have your Core paired with H9 Control, make sure your Core has updated firmware. Afterward, follow these steps.
1. In H9 Control, click on the Settings icon at the bottom of the screen
2. Click the “Sync Algorithms on H9 with Server” button
3. Click “Sync Algorithms on H9 with Server”
Now, all the algorithms registered to your account should show up on your Core.
This capability will never go away despite the Core model being discontinued. For as long as you own the Max, your Core will be able to use Max algorithms.