The download button opens the iTunes App Store, where you
may continue the download process. You must have iTunes installed with an
active iTunes account in order to download and install the software. This
download may not be available in some countries.
From Kelsey Publishing Group:
General bug fixes, performance and memory improvements(If updating from v4.9.86 or lower:New iPhone LayoutFix for issue download problem on iOS9)**We always love to hear your feedback. If you have any comments or queries please contact us at email@example.com**