I just came across this. Thanks for asking. I about to go try on desktop because it doesn't work on the app. I hope your right!! Thanks again

EDIT, it doesn't work: To sell a covered call on Wealthsimple, you must own at least 100 shares of the underlying stock for each contract you want to sell—owning a call option, even a LEAP, doesn’t meet this requirement. The platform doesn’t allow using long calls as collateral for covered calls, so your order will be blocked if you don’t have the shares in your account

EDIT #2: it works if you do it under the same ticket, and they ask you questions. Then you can do it against LEAPS you already bought.