Hello, I made a thread in the support forum about it, but maybe you can answer me here?
My question wasn't so much about the shop being random or not (I think I remember that from the last time we had it), but mine changed on me out of the blue. First it looked like this:

https://images.discordapp.net/.eJwNyUEOhCAMAMC_8AAqFJutvyFI0KiUQM0ezP59nes85u6nWcym2sYCsO4jSV_tUOmxZFtEyplj24dNckFUjWm7ctUB3hEHYucQJ54ZaQJPyBSQ3fxm-FDwcNejyrfaVov5_QEH8yLi.GPvS8FVKAfo1peqXmggKfOx3jzc

Then it changed to this:

http://forum.naruto.oasgames.com/en/data/attachment/forum/201612/29/174653qwsomiswmxvwvmwo.png

As you can see, the time at the bottom right never changed for when it gets updated (and I was looking at it after 0:00), but it changed on me anyways... aslo giving me less items to buy? Is this a bug?