JBL Flip 3 cant enter bt discovery mode

Hello, im facing problem with my jbl flip 3 speaker, it can turn on, charge,buttons seems working but everytime i try to enter bt discovery mode to pair it with device or trying to hard reset it does nothing. I searched severl other questions, and followed some tips like dissasemble the cover to check if anything happens or charge it to max. Also, it is not letting me to reset, when i press volume up and phone button it does nothing. However, when i press bluettoh button and volume up, it turns off, so im assuming buttons are working. I really dont know how to solve this problem and what even causing it, thanks for reply :)