How do I fix my mibro a1 not charging or opening

When I got my watch it worked fine for about 4-6 months I stopped using it for about a week then when I try to open it not working or when I try to charge it not charging

I tried couple of methods I found online like leaving watch to charge for a bit then trying to open it ,trying to charge it to laptop then switching to high voltage adapter

,cleaning charger pins and pin slots nothing worked pls if anyone got any idea how to fix it I will be greatful