certbot has failed continually on my DO instance. It cannot update my cert on cron. I have to manually update my cert when I remember to do so. In fact, I had f

certbot has failed continually on my DO instance. It cannot update my cert on cron. I have to manually update my cert when I remember to do so. In fact, I had forgotten to do this for the last several months, so my site gets to display a nice scary warning for anyone who might venture forth and try https. I've searched how to fix it and nothing comes up. The site is static html and I've considered just removing https.