amazon checkout

Hi I have recently been trying to install amazon checkout and despite having installed all of the required information correctly with the desired checkout button in place when I try to use said button and log in to amazon checkout I keep getting referred to another page with the message

Please choose a delivery address Cart Continue Account
but there is no delivery address to choose? and when continue is clicked nothing happens, and when cart is clicked it just goes back to the cart, I also have a problem with the cron job, as the email states that there is No such file or directory, and when the url is clicked the page shown shows the message "The page you requested cannot be found"
any help in resolving this would be gratefully received
yours don

Maybe you can use a crontab service called https://www.easycron.com/ to trigger the script to run, it very easy to set up and supports multiple configurations.