Motion pluses won't connect with each other

I tried everything to connect my 2 motion pluses. Updating the firmware, hard resetting both devices, connecting to one device (master) only but they still can’t connect to each other. Please help!

Are the speaker from the same serie?
(Serial Number?)
Otherwise ask the support.
I am sure you made the correct button combination to connect the speakers.
(Manual, videos will help)

Mine work, but they were acquired around the same time.

This problem I had with Flare mini.
The elder one will not pair with the newer model.
Same was with that ICON mini.

That’s really a great problem for customers and they get pretty annoyed about that.
soundcore doesn’t mention this at all.
It’s a shame.