Is Amazon China blocking foreign IP?

I cannot connect to https://www.amazon.cn/ in Taiwan for days. Is Amazon China blocking foreign ip or it has been just broken ? If it is intended, there has bee no announcement at all. I have Kindle Unlimited subscription with it and now I cannot even cancel it.

I tried to ask about it in r/amazon but my post got removed immediately : https://imgur.com/7gTTawe

I can't connect from outside the country.