I click on the photo gallery that the pics are in then click on the photo I want to upload...
Looks like you left out a couple of steps in your description. You need to click on "upload photo", then the browse button, then select the image from your device. Make sure you're still logged in as that could prevent the upload. Make sure the image fits the limits on your account. Make sure it's a jpg or a gif. Otherwise I don't see a problem, perhaps try another browser, as that is often the issue. Opera works fine, chrome may have some issues.