Ad Breaks has it’s own Payout account you make which ties itself to your personal account, and you cannot connect them with biz manager yet. If this was already created for your page, you cannot create a second payout account.
By eligible, does that mean you have all three options completed on the page? followers, watch time and eligibility?
Yes it is, in this screenshot is where you manage the payout account, you can only do so from a browser and not in the app, the roles are at the bottom of the page