IOS – App Store says an app is installed, but it isn’t

ios-appstore

I've installed a new primary SSD drive on my mac, now I'm trying to download a few apps that I've already installed on my previous HD, but app store keeps saying they're already installed. But they are not.

Is there a way to tell Apple's App Store that these apps are not installed?

I've already tried the solution on the thread: App Store thinks apps are installed, but no success.

My old HD is still connected to my MBP, but as slave. If you guys need further info, just ask.