App store links slow at opening

Unity Engine
1

Hello,

I have a rate button in my iOS game that take the player to the app store page for the game. The problem is that it is really slow at opening the link.
I use the following code:
Application.OpenURL (“itms-apps://itunes.apple.com/dk/artist/anders-moller/id987831642”);
Any ideas on what could cause this delay?

2

For me general links to Twitter and Facebook from a UI button take forever to open native app, I just assumed this was Apple issue, but thinking about it, not to sure?