Thank you for taking the time to post and welcome to the Community!
I'm sorry to hear that you are experiencing connection issues with the Sleepbuds. I can imagine how frustrating this must be for you and I will do all I can to assist you!
If you have updated the Firmware on the btu.bose.com website and have reset the charging case. As well as disconnecting from the app, deleting and reinstalling the application then repairing. All that is left is to contact your local Technical Support team for assistance. I have included the LINK HERE for the Malaysian Support center.
I hope this helps! If there is anything else we can do, please reach out again!