Hello & Welcome to JustAnswer.
Thank you for your question. I will do my best to assist you.
May i connect with you remotely to troubleshoot the issue directly? Thanks
Have you set the speaker to the bluetooth connecting mode?
Can you make sure it is turned on, read the manual that came with it and then see if the Bluetooth shows the speaker option to pair with.
Click it to pair with.
Right click the speaker icon, and choose Playback devices, then set the new speaker to the speaker.
You have to right click (using mouse) on the speaker icon in the lower right corner. Then choose Playback Devices.
I can do remote connect for $20.