To print your meal plan, access it on the web version since this option isn't available on the app.
You can log into the web version of the plan here: https://ketocycle.diet/myplan
On the web version, you can find the option to print the recipes at the bottom of the page below your recipes for the day.
To access and print the grocery list, click the clipboard icon next to the meal plan dates. Check the items you'd like to add to your list, scroll down and click Print grocery list for Week.