First, you'll want to go to your billing page. You can click your email address in the top-right corner of any Local Brand Manager page once you're signed in. You'll see a "Billing" option. Click that. Or click this link: https://app.localbrandmanager.com/billing/edit

In the bottom-left corner of your billing page, you'll see a link that says Upgrade, downgrade or purchase a yearly plan. Click that.