First, please try the following:
1- Allow third party cookies, it may help you solving the problem. To learn how to do this, please click HERE.

If it doesn't help, please try the following:

2- Clear your computer's cache and cookies. How you can do that is described HERE.
3- Make sure you have the latest version of your browser.
4- Try using a different browser.
5- Reset your router.
6- If possible, try using a different computer.

Hopefully these standard fixes will help you solve the problem. If, however, you still cannot see your neighbors, please contact us describing the problem in detail, explaining what you have done to solve it, and very importantly, which browsers you have tried and which computer system (Windows or Mac) you use.