Buying expansion on iPad in app not working

[Yggdrassil]

For some reason the in-game purchase of Tercio to Salvo expansion isn't working.

Anybody has an idea what could be the problem? I enter my iTunes code, click on the 'Buy' button to confirm and...nothing. I get a message saying the purchase cannot be completed.
I can use iTunes fine - I downloaded some other apps with no problems.

Who do I contact for help? Getting Pike and Shot was a major reason why I even decided to get an iPad - I hope this can be resolved....

[keyth]

For some reason the in-game purchase of Tercio to Salvo expansion isn't working.

Anybody has an idea what could be the problem? I enter my iTunes code, click on the 'Buy' button to confirm and...nothing. I get a message saying the purchase cannot be completed.
I can use iTunes fine - I downloaded some other apps with no problems.

Who do I contact for help? Getting Pike and Shot was a major reason why I even decided to get an iPad - I hope this can be resolved....

Have you checked:

viewtopic.php?f=299&t=63688

It does work on iPad, I promise you that

[Yggdrassil]

Thank you for responding

Yes, I saw that post
I think I did everything according to instructions in that post

To clarify, this is what I have done:

1. bought Pike and Shot basic game through App store (on my desktop), then installed it on my iPad. It works, I can start the game on iPad fine
2. OK so then I try to buy the add-on Tercio to Salvo...I start the app, choose the menu "Historical", then choose the Tercio to Salvo battles, at which point I get a notification that I need to purchase it first...
3. a box for entering my password appears, I enter it (I made sure that I did in fact enter the correct pass, so that is not the cause of the problem)....hit 'buy' key when prompted and...nothing, I get a new box with a message "Your purchase could not be completed - please contact iTunes support".

4. I did in fact contact iTunes support. THey told me to make a test by buying and installing any other app through App store. Which I did, it worked fine, upon which they told me that the App store works fine and that the problem is most likely caused by third party software (i.e. the Pike and Shot itself).

Guys, please help me out here....