Bing Maps in China

We were hoping we could use this plugin to display Bing Maps on a Chinese language site as Google Maps won’t work there and Bing is supposed to work. Testing with people in China it turns out the maps aren’t loading. I know it’s a long shot but I’m wondering if you have any idea why that might be. Like, if it turns out in order for it to work there you need an enterprise account, that’s fine. I’m just trying to confirm that’s the case before making that purchase. Thanks in advance!

Alan