Thanks a lot!!!! The problem was in 2 – Curl wasn’t enabled.
Could you please, share why cURL is important for WeChat, but for example GitHub oAuth worked jsut fine without it?
I have noticed that after I scan QR code for your site, I am called back to the link like:
https://www.xiaomac.com/wp-login.php?code=…….
However, when I scan QR code for my site, I am called back to the link like:
http://mysite.cn/?connect=wechat&action=callback&code=…….