Hi,
I'm struggling with this - is it really the case that you can't alter the W&B profile of your aircraft within the iPad app? I use a Macbook at home (which you don't support and the latest OS doesn't work with the unsupported version) and my work PC won't allow access to the web-based version. 

I managed to borrow a friend's PC and input all the data but, on the iPad, all it's remembered are the pilots, passenger, fuel and luggage weights, not the envelope that I spent ages inputting from my POH (unhelpfully in imperial units!).
Best regards,
Alex