iPad won't load pro version already purchased on iPhone

Hi Richard,
When iCloud is enabled, the app will automatically restore your purchase after opening on a new device.
-Enable iCloud on your iPhone
-Start and close the app on iPhone to initialize sync with iCloud
-Enable iCloud on your iPad, using the same iTunes or iCloud account
-Restart the app on your iPad

You will receive a message after startup, when pro has been activated on your second device. Please get back to us if that didn't work for you
Best regards, Peter