Should smurfing in clash be punishable? I mean, it's obviously so you can get easier opponents and get the rewards, played against (at least) one of them today (low level, low mastery score in tier 2) and it upsets me.
We are definitely watching smurfing very closely and will punish those players who we believe are smurfing. Best thing to do is submit a ticket to support. You can also link the match history of the game in question and we will take a look.