Quote from your link "We understand you might be disappointed by this change, but rest assured, everything we do is about making our games even better and even more enjoyable for you.". Congratulations on shooting yourself in the foot, 157 pages of negative comments regarding forced portrait mode means nothing to you? Well…
What have you done to the game? Are you intentionally trying to get rid of players? Hopefully you restore the landscape mode/full screen version soon, until then it's time to find something else to waste my time playing.