I can't access App Inventor. Message: " If you see this message for an extended period of time, it might be because your internet service is blocking requests to https://ai2p1.appinv.net/. Contact your administrator to check on this and remove the block." In 2 pc in my home network wifi. In android normal access some wifi.
some resources are stored at appinv. net, and this is blocked by some internet supplier, so they can not access AI2 server.
I have heard this from some guys in China.