Cannot pair Soundcore Motion + and Soundcore 3

Is it not possible to connect a Motion + speaker with a Motion 3 speaker? I have reset both speakers, removed the device’s from my Bluetooth, then tried the 5-8 seconds of holding the Bluetooth button, white light and still nothing.

Are these two devices impossible to pair?

Is there a setting on the Soundcore app that can pair both speakers?

Any help would be appreciated.