Frequency 2.0 speaker double beeps

I have the same beeping problem as others, that began yesterday. The speaker is charged. It double beeps every 60 seconds if connected to my phone. It's previously worked fine and I've changed nothing.

I couldn't get past the automated idiot at Xfinity because it doesn't recognize "Frequency 2.0" and none of the options given are relevant. Replies to previous questions were referred to chat help, which is no help.

This is a forum. I thought that was where you went for assistance. Please don't refer me to the automated idiot. I couldn't locate an online manual for the speaker. Do you have a link for one? Supplying a link for a manual would help everyone with Frequency 2.0 problems.