Why does game keep losing the network connection?

It's not my modem. This has been happening a lot and way before I installed the update. Although, now I'm also having the problem where I can't leave the Home lot. Right before this new problem happened, it asked me "Where's the network?" I closed the game, force stopped it, cleared the cache and did a hard reboot of my device. When I went back into the game, I had a SIM at home and I called another one home from the Civic Center to interact with a toddler. I then tried to send the SIM that was originally home to work. When I did that the Sims Mobile Splash screen came up (the one that appears when we are switching locations) and then the "The Sims Mobile has stopped" error screen came up. I've been able to reopen the app but the 2 Sims are still stuck at home, 1 SIM is Downtown at the Club working, and 1 is at the Market Square working at the fashion place. I updated the game yesterday and didn't have any problems except for the Where's the Network? bug. The SIM that was originally home just finished reaching level 10 in the cooking hobby. The other 3 Sims have been working at their jobs.  When I updated the game yesterday, all 4 Sims were at their jobs working. I hope this helps.