Why tdk trex max a34 not flash blue light after reset?

how to pair device if when i reset bluetooth i got only blue light and speaker phone lights but i doesnt connect device when i searching on bluetooth search ? and how to get blue light flashing when i turn on tdk trex max a 34 wireless speaker? i know need unpair all devices thats already done,but i cant find trex max in bluetooth are. how to fix it ?