A minor Title Update has been rolling out which will continue to roll out to all players over the next 24 hours and will require you to update from your app store at the end of this period.
This update is backend tech work.
Beginning on February 28th, 2023, in order to accommodate the game’s next update, Star Wars: Galaxy of Heroes will no longer be supported on some legacy iOS devices and Android devices.
The minimum device requirement is now iOS 12+ and Android 5.1+
At any time before or after the update, players can import their account from an unsupported device to a supported device using their in-game Player ID and/or Ally Code. Your account will still be available and ready to play on a supported device.