Hello! Please do not reuse threads for new questions.
There are a couple of ways to get your flightplan to MSFS from Navigraph, but not from your iPad to the simulator directly. You would have to use our MSFS in-game panel, load the flightplan from an exported file on your computer or load it through any existing SimBrief integration.
Here’s my answer on another topic. If you want more details, check that topic as a whole! There is lots of information in there.
Kind Regards,
Malte