I have the same issue. I have by city on an IPAD and a Samsung Note S20. Can't get it to load on the Note for about 2 weeks now.
When I attempt to do so, it says Loading Your Previously saved city failed. Make sure you have the latest update and then it gives a big button to update.
I hit update, it takes me to the play store. I uninstall my current version. Reboot the phone and then install what's in the play store.
I attempt to load again after going through the tutorial and it says the same things. I've done this many times. I decided to wait a while in case an update was pending but it's now been two weeks and i cant play on my phone.
I checked for updates on my ipad as well, resaved the city and I still get the same results.
Version on Phone 1.39.2.100801
Version on IOS 1.39.7
I thought clearing the cashe on the phone might be the answer as noted in early post but that didn't work either.