Dear God
Haypi has screwed up the new one so badly the new people are coming back.
What a glorious day this be. Give thanks dear fellows!
Now to the lost tower dude.
Ye, I play TLT
Basically Haypi took money from the original haypi players and built an all new game. As you can see it runs on energy which can indeed be frustrating.
Haypi Monster (O) runs completely different, cooldowns. Say, the best training is a 24 hr cooldown, and then theres the 10 minutes cooldown. I personally loves Haypi the original a lot more. It has servers instead of one massive chatboard so you feel like more of a close community then every dingbat in the game talking at once. But still its ultimately your choice as the player which we leave up to you. You could of coz just play both like Koenah said though. Either way, enjoy the experience while it lasts

(PS if you do join The original I suggest getting a pal code first. Mine is O7gm, if you care. Im in server 1 which is so crowded they blocked it off to the public so you need a code, but its active

)
Edit: Only problem with server 'boards is that some of them can be quite deserted. I recommend joining a new server, or one of the very first. Both have the most players it seems.