I have been having trouble pairing (TWS) and then connecting (Bluetooth) two Motion Boom speakers. If I TWS pair them first before trying to BT pair them to the phone then the BT pairing fails. This is the same on different mobile devices. Yet this is the sequence that an AnkerDirect agent posted on the Q&A listing on the product page on Amazon UK.
If the master speaker has been previously paired to the phone then sometimes it will automatically connect to the phone after TWS pairing, but more often than not it refuses to connect in that scenario as well, even if trying to force connect from the phone.
The way that I think it works best is to turn on the master speaker and let it connect to the phone, then turn on the slave speaker - TWS then needs to be manually forced to reconnect, and before the slave speaker BT connects to anything if it has been previously paired.
Surely it should not be this temperamental. (I have checked firmware on both devices too - although bought at the same time one needed updating but the other didn’t!)