Ennis has been paid hundreds of thousands of pounds by corporate sponsors such as BP , Omega and Powerade this year .
Rule 40 forbids her mentioning those who are not official IOC sponsors on her website or in tweets for 30 days during and around the Games .
Ennis has been paid hundreds of thousands of pounds by corporate sponsors such as BP , Omega and Powerade this year but Rule 40 forbids her mentioning those who are not official IOC sponsors on her website or in tweets for 30 days during and around the Games .