I've been talking to Deadcode about recent problems regarding Wormkit modules. He has confirmed that he will be working on some solutions in the next update.
Meanwhile, if you want to use Wormkit modules in leagues, you must inform your opponent beforehand in the lobby. Any module that gives you even the tiniest edge must be informed in the game lobby and should be enabled only upon agreement. Obviously failing to do so will void those games.
Examples:
Some Wormkit modules like wkRemapKeys or modules that are solely for visuals like wkFlamingHealthBars can pass without informing your opponent.
Modules like wkWormOrder, wkPin or even CrateFinder must be informed.
If you're in doubt about a module, you can always send me a PM.