I wanted to get strong enough to get to Tee-Hee 15 for the Idleon crossover reward (had played legit up to that point but got stuck on Tee-Hee 2/3, and then somehow lost ~3 days of progress so I gave up for a while... then found this thread).
I managed to do it by just modifying the realm damage bonus (burrito) and getting some gems (maybe 30k worth of gems?), which made me super strong and quickly got to Tee-Hee 15.
But, even though I got to Tee-Hee 15, and even 16, the crossover thing doesn't show any code.
Was my account flagged?
Or am I still missing something to unlock the last crossover reward (the Idle Skilling trophy?)
Edit: Never mind! Two things: 1) you may actually need to reach 16, and 2) you may need to enter Lord's Lair and click the torch that you unlock by beating Tee-Hee 15. Got the code now