I'll have you know, I'm erotically chubby
Either way, I only ever use Free Boosters and nothing else. It's very rare that I use Auto Clear, and only if absolutely necessary. I don't use it to win every competition/cup, and I don't exceed around 500ish levels a week - so sort of fly under the radar is what I'm getting at.
I lose competitions/cups/games here and there, but I mostly try to win if I'm able to do so, with what I deem legitimate gameplay. For example, if I have to spam Wizard Hats, use Auto Clear, or blow a load of Air Strikes, I'll let myself lose the round or something similar.
The *one* thing I found to be a sure ban on every single instance of my bans in both games has been surpassing 70-75k gold at any one time. That's when I got reset in Royal Kingdom, and that's how I've been banned like 3-4 times past level 1500 on Royal Match. I turn off Free Boosters and buy a ton of boosters or what have you to bring my gold down, or buy +5 moved 5-10 times to burn the gold, and then I continue playing with around 10kish, which seems to keep me going free and steady.
In essence, play as you would normally, just as if you have access to permanent boosters in every game. That's how I see it anyway.
Attached is my profile stats for your perusal.
Happy New Year fellas