Beats ear bud automatocally switch devices and can not be reset

I have two iphones and two Ipads, my wife uses an iphone15 and an Ipad, I use an Iphone17 and an Ipad. She uses Beats Powerbeats Pro. The strange things is every time when she plays music or any sound to her ear buds, she get close to me and when I was playing any sound on my phone or Ipad, the sound from my devices will automatically switched to her ear buds. Then she will need to re-pair the beats to her phone again by put the ear buds in the box and start over the whole pairing process. I tried all kinds tricks which I can find online but all don't work. The tricks I have tried are: disconnect my device to the earbuds, and "forget the device", set connect to this phone to "When last Connected to this Phone", my phone still will automatically reset the bluetooth connetions by itself for me to connect to the ear buds and set connection to "Automatically". All of these were failed to solve the problem. Then I tried to reset my phone "Reset network settings", that did not work, then I tried reset "Reset all settings". that did not work either. I tried reset the ear buds by pressing the button for 15 seconds, that did not work either. I am totally lost at it. The ear buds does not only automatocally switch to my phone but also unpair her phone at sme time. Only one way and never otherwar around.