EP-T10 Right Earbud Quiet

I purchased a pair of EP-T10 earbuds about a month ago, and they were working fine up until yesterday. 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. What can I do?