Hi @zach1,
iPhones, Macbook, Windows laptop. Same iOS version as you. Did you try my steps?
Pair all your devices that first time and stop pressing the BT button for 2 seconds as this unpairs older devices. Pair your first device, disconnect via the device, pair your second device, disconnect via the device, etc. I’m not sure this has to all be done at the same time but it worked for me (in other words in my case can I add a fifth device when the SoundCore 2 powers up provided I have no other devices grabbing the BT radio - don’t know). Repetitively pressing the BT button on the Anker SoundCore 2 for 2 seconds means you’ll be forever forgetting and re-pairing all your devices, which I don’t have to do.
Let us know if that works for you