Don't worry, you won't have lost any money in trying to purchase the platinum.
I've taken a look at the video you have posted. The issue you appear to have is contacting Apple when trying to purchase the Platinum.
Normally, when you purchase Platinum, if you tap on a certain amount, a pop-up appears asking if you are certain you wish to buy that amount of Platinum. This pop-up is generated by Apple, and acts as a confirmation for the Platinum purchase.
From your video I can see this pop-up is not appearing, which means you are unable to contact the Apple servers. Therefore, no purchase of Platinum has been made, and so no money has been spent.
Unfortunately I don't know how this can be fixed, as the issue is not with the game itself, but rather it seems to be your connection to the Apple servers.
Re: Platinum...still not working
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