I've been using the same readers for many years now on the same Samsung Note 10+, and all of a sudden today neither reader will connect. I removed them and tried to pair again and was getting failed connection - rooted device error. But nothing has changed.
Message is Device not Supported. Rooted devices are not supported. Please try another device or remove Root from this device.
Not sure why this has started to happen after 6-8 years of use.
Square Community
Square Products