If you have an existing active license for a LifterLMS add-on, you can get prorated so you get a discount while upgrading to the Infinity Bundle.
To request an upgrade from a single add-on, contact us here: https://lifterlms.com/contact/
To upgrade yourself from the Universe Bundle to the Infinity Bundle, log into your account here on the LifterLMS website and press the big orange upgrade button next to your Universe Bundle subscription.
Note: Bundle Upgrades are currently only self-served if you have only purchased a bundle on your subscription. If you have a subscription with multiple bundles and/or products please contact us and we’ll help you get upgraded!