Some of the features on our website are built in Flash. Therefore, it is important to have an internet browser that supports Flash. Most of the modern browsers support Flash, but not all have installed it by default.
If Flash is not installed or supported by your browser, you may not be able to see the "upload photo" button in your profile and may not be able to add new places to the website. We recommend that our users use Google Chrome or Firefox as these browsers tend to work better with Flash and tend to load our website faster.
Another reason could be that you don't see the 'x', because of the white background of the image or picture you want to delete.