If you, your parents, or your cultural community have strong feelings about the hymen, you should not use the Mooncup at this stage in your life (you can read more about the Mooncup and the hymen here).
www.mooncup.co.uk/using-mooncup/can-i-use-the-mooncup-if-ive-just-started-my-periods/
So, I've got a few issues with this. Firstly they're peddling this whole thing of hymens staying in tact but secondly... should they be telling girls they need to listen to their parents or "cultural community" regarding their vaginas?? Yes, some girls may be influenced by this and if so the phrase should be "if you have strong feelings" right? This moves beyond being informed by something to saying you should listen to someone else about your vagina.