Error updating data

So I’ve just received decided to start playing Arena again on account of the Final Fantasy set. Now I’ll admit it’s been a hot minute since I’ve last played but have you always needed an Internet connection to play on iOS? Cause whenever I try to launch the game on my lunch break at work, it keeps saying error updating data. I’ve had little to no issues playing it there in the past. I’d just like some confirmation that I’m not going crazy here. Any help on the matter would be greatly appreciated.