Because you need version 6 of Cake Wallet for that. Though version 6 is still flagged as prey release on github: https://github.com/cake-tech/cake_wallet/releases Also Spark is not really self-custodial... 'Spark is, of course, much better than a classic custodial wallet - it allows for unilateral exit if the operator shuts down and deletes their keys (once they finish implementing it) - but it still requires fully trusting the operator. If the operator changes the code running on their server and swap coins with folks, they can steal coins going forward.' - Matt Corallo (Bitcoin Core dev) https://stacker.news/items/1020261 https://forklog.com/en/wallet-of-satoshi-begins-beta-test…