It’s the same for me with the exception that I was actually able to use the sim (version 1.19.something). The first time I started it after the update was released it told me there was an update available but when I clicked UPDATE it just started the sim without installing any update.
After a while I made the BIG MISTAKE of going in to the app setting and press RESET in an attempt to somehow force it to update. Now both MS Store and the Xbox app says that it isn’t installed and when I try to install it I get an error code.