Here is my experience with another mobile/PC game guys.

I was addicted to a card game called Hearthstone for about 2 years. I did not spend a dime but managed to become a pretty good and competitive player and unlocked all Legendary Cards of my class (they would cost hundreds of dollars if bought directly). Keep in mind that being a card game the time and effort spent was far far more than TE.
The game had big updates every 3 months that introduced new cards and new strategies. At first this was welcomed for me because it kept the game fresh but then after I started a time demanding job I couldn't keep up and they even introduced a new system and lowered the quality of many popular cards, making many overused strategies obsolete. This was welcomed by some and hated by many, I at the time took a very easy decision to stop playing the game that I spent literal days mastering. I had great times but I realized it was over and kept the best memories.

Moral of the story this is the nature of mobile games, they change without looking back and at any time we should be ready to make a decision to go forward and learn or stop playing. I still have to say that communication could have at least made the changes less annoying for many.

I feel bad for Sausy and Jeeves because they are very nice guys for whatever problem I've had, but sadly they have to take heat for something they didn't do.