The failed to acquire data error loop for SINoALICE can be pretty frustrating as it consistently has you on the loading screen trying to jump into the game. Unfortunately, with the error, it never happens, and it brings you back to the main menu of the game to try again. There are a few ways to get around this issue, with the most straightforward method boiling down to uninstalling and reinstalling the application to your smartphone.
Before uninstalling SINoALICE from your smartphone, try forcing yourself out of the application and starting it over. You can do this by seeing what apps you have running in the background, closing out of SINoALICE, and then starting a new session. If you continue to encounter the error, make sure to visit the application store on your smartphone, you used to download the game to see if there’s an available update. Some players did not receive the instant update or notification SINoALICE had one. Thus the failure to acquire data error continued to occur. You may want to go into the store to make SINoALICE a game that automatically updates moving forward.
Should both of these approaches fail, and you still have this problem, your best bet is to uninstall the game and do a fresh install. Double-check you have access to your client’s account so that you don’t lose any available data. It doesn’t hurt to write your username and password down somewhere so you can immediately log back in once the fresh install wraps up.