Well... as a dev having worked several years in the industry creating f2p games like this one this update very obviously is an update to increase payment pressure. Increased prices, reduced selling income, reduced (and more cumbersome to earn) income in general, worthless old items (need to buy or win all new) slower progress (removed xp gain on bosses) is all hurting the game experience.

Also the energy bar is not being refilled anymore on a new level up.

Not very enjoyable.