I’ve had this problem, & so have several in my alliance. I opened a support ticket. The response was, essentially, “It must be your equipment failure - figure it out yourself.”
This left me with the distinct impression that E&P couldn’ care less about thier server issues or the quality of play. I play on a new Note 9, with 1TB of memory (tons free!) & the latest game update. Neither my equipment nor the game version is an issue!
SG Customer Service is abysmal. They seem much more interested in developping new buildings & things for players to buy, so they make more $$$.
IMO, players are fungible cash cows to SG. I think of this now before I make a purchase. Its just a cell phone game, therefore its not worth much of an investment of my time, or my money.
Instead of being frustrated, I’ll go do something else that I enjoy. I’m sure I’ll be replaced by some zealous newbie who will line SG’s pockets, chasing that new HoTM!