Can someone tell me the difference between Preset(blue) and Library (Gold) on the gateway app. And tap to sync?
They are the same thing, just saved in different places. Presets (blue) are stored on your phone/tablet so if you know someone else with a CODE you can play your (blue) presets through their amp. Library (gold) are what is stored on whichever CODE amp you are connected to. The save screen lets you save to either or both places assuming you are connected to a CODE.