“Flex Fits” Period Product

Has anyone tried the period product “FlexFits”?

First, can you use it when you have an IUD? My doctor told me I couldn’t use a menstrual cup with my iud because of suction potentially pulling it out of place, I know this is a disc so it’s a bit different but I was wondering if anyone knew if it was for sure IUD safe?

Second, what’s your review of it? I’m mostly interested in it for the advantage that you can have mess free period sex with it. I have the copper IUD right now so I have a long heavy period and would like to not avoid sex for like half a month. I’m also planning on switching to the mirena to stop my period anyways, but in the event that I’m bleeding for possibly months after insertion, I would like to have mess-free sex during that time. What are your thoughts on this product? What are your thoughts on sex with this product?

Thank you!!