The right earpiece T10 flashes all the time intermittently & stopped working

I purchased a pair of EP-T10 earbuds about a week ago from Extra Saudi Arabia, and they were working fine up until yesterday. I was wearing both headphones, and suddenly the right one stopped working. When I put it in the box it flashes all the time intermittently, but it doesn’t respond to any action. The right earbud has become very quiet. I tried clearing the pairing list and reconnecting, but that doesn’t work. The left earbud works fine, but the right earbud’s problem is present whether I connect to my phone or laptop.