The platform communicates with many servers in order to display the different information (Prices, Charts, Chat etc. all have different servers). In some cases, your local security settings will block parts of the trading platform from communicating with one or more of these, and this causes the problems you are seeing.
Please follow the below instructions to allow the platform to reach the required servers:
Delete Temporary Internet Files
To delete Temporary Internet Files open Internet Explorer > Tools > Internet Options:
On the General tab press Delete… under Browsing history:
Now chose to delete Temporary Internet Files and Cookies and press Delete:
