Where can I download the Photo app for Mac - my iPhoto was cancelled by Apple in OS X 10.10.5? It is not available for download at the US app store!

I recently received a notice to update iPhoto on my Mac (Yosemite, version 10.10.5). The link took me to the message "This update is not available for this Apple ID either because it was bought by a different user or the item was refunded or cancelled". Then I opened the iPhoto app [already cancelled by Apple] which took me to a text box that stated "In order to open iPhoto you need to update to the latest version - the version of iPhoto installed on this Mac is not compatible with OS X Yosemite - download the latest version for free from the Mac App Store." I clicked the link and was taken to the message "The item you've requested is not currently available in the U.S. store". Can anyone direct me to a place where I can download iPhoto's upgrade/replacement - the Photo app for Mac OS X Yosemite? Many thanks.