@Ed_L Hi, thank you so much for sharing your question on Anker forum. For your information, the latest connected VIVA will auto connect with your phone. That is too say, to connect with the second VIVA, it needs to click "connect" on Roav VIVA app.
I totally understand it causes much inconvenience. We forwarded this issue to our engineers. This is a brand new product line, so we always carefully consider our customers' opinions and will try to improve it in the future.
Thank you for your patience. If you have further issue, please feel free to contact us at email@example.com.