My watch has issues charging recently, any suggestions?

Hi everyone! I have galaxy watch 7, got it a bit over year and a half ago. I really really like it, especially after fitbits.... but recently, maybe for about a month or so it started having charging issues. It happened suddenly. It just charges very slowly... like I mean it can take hours. Sometimes I notice that it pauses the charging by itself for some reason. It's never hot or anything. I use the og charger as well as Samsung adapter.

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I have Samsung care+, it expires in November I believe, but it's so so confusing, now that i tried to figure it out... the Samsung care website link in the email that I got sent doesn't even work... also it looks like I'll have to pay at least $39 plus tax plus whatever fees.....

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I thought about just getting a different charger cuz maybe that's the issue, but the charger is $55

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I would appreciate any advice!