If you can’t log in or unable to find Pin Duo Duo, don’t start at https://en.pinduoduo.com. It’s actually at yangkeduo, and then start registering by scanning the QR code on the side of the screen using WeChat on your smartphone. Possible reason why you might not see this mentioned much online is that Google may have blocked the results due to its app being unsafe, but actually IDK coz I don’t use this so 🤷‍♀️