I got a Periodic Audio Nickel recently - as new from an eBay seller, not that it really matters. I'm at a loss as to how to get it working with my Android 12 phone - I can connect it fine, but the amp doesn't light up to show connection has been made, and I'm not sure what to do in order to get it going. It's charging fine, I think; the phone is a OnePlus Nord CE 2 5G if that makes any difference. Could anyone who's used this with an Android give me some pointers please? Thanks!