Aukey EP-T25 not in sync

It has been 5 days since i bought the EP-T25 and they are always out of sync , either on laptop or phone music runs okay but every now and then it glitches and sound from one earbud comes delayed .It comes back in sync after i restart the buds by putting them back on the charger and closing the cap but soon after it does the same.

Edit : left bud now cutting out every 10-20sec.