Okay, I have a good news. So the reason why we can't do anything even if we're decide to refund and close the case, is because Paypal give us 10 days to appeal the dispute if we don't agree with the decisions. If you go to resolution center, and you still see the 'appeal' link or such, that means you still can appeal for the case. And because of this, the case is still considered as 'open' in paypal admin system. So what you should do is either wait 10 days so it will be closed automatically, or contact Paypal using the message feature (in top right menu, beside the gear icon). you can chat the paypal customer service there, it will take a day or two for them to reply. I got help from one of the CS, he close the case since I said that I don't want to appeal, he also help me upload some of my info again, and now my account limitation is lifted already. Hope it helps you!
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