Battery doesnt to 100%

Hello i been daily this watch since last year

Battery doesnt to 100%, always stuck around 12-13% and only last for a day doenst matter how long i charge. I changed cable, clean my pogo pin with isopropyl, firmware update and hard reset and even pair with my other phone and doesnt fix the issue.

I would like to get it fix, i bought this watch in malaysia but now im in Philippines and looking to get battery replacement if possible is there a service center here willing to fix my watch