I have the same issue, stuck at the loading screen. I've tried it many times in the last 16 hours. I am on my home Wi-Fi, which works perfectly for everything else. Restarted my tablet but still the same issue.
Still unable to log in. Worked a little while, then I attempted to switch accounts and now stuck on Loading Cantina. Others are having issues with the arena battle freezing at the end of battle, and then game is reported as Not Responding. This is still an issue.
Connection: wifi and 4G. Fails on both.
I'm now having issue as well. Was in the middle of cashing in my daily quests, when it locked up. Force closed the app, then relaunched and got stuck at the loading cantina screen. Been stuck at this screen for an hour now.
I am having the same issue as well in a galaxy s9 but my wife is not. I have reset the network,router,force stopped and cleared the data and cache, cleared data on google play, uninstalled and reinstalled the game and nothing has changed