Hello Hope88,
Thanks for posting your concern here.
Please try to shut down the host device and disconnect the headphones for at least a minute. Reconnect the headphones and Update Surface Headphones. The update will take time to download but feel free to use your headphones or you can let it sit and wait for the update to finish.
Let me know how it goes. Otherwise, don't hesitate to respond to this thread if there’s anything else that needs to be addressed.
Kind regards,
StevenK