Website hosted in China

I’ve been using NextScripts: Social Networks Auto-Poster in two websites successfully. But now, I’d like to use it to post to Facebook & Twitter from another website hosted in China.

It fails with a timeout with the default settings because Facebook is blocked in China. I’ve tried to use the proxy function for Facebook (still waiting on Twitter developer account), but I still get a timeout. Is there a way I can use this plugin with Facebook & Twitter within China, or is it just a lost cause?