My domain is: app.dase.io
I ran this command: don’t know what to run
It produced this output: nothing
My web server is (include version): apache2
The operating system my web server runs on is (include version): Debian 9
My hosting provider, if applicable, is: google vms
I can login to a root shell on my machine (yes or no, or I don’t know): yes
I’m using a control panel to manage my site (no, or provide the name and version of the control panel): no
how to renew my certificate?
can’t find simple step-by-step instruction… it’s a bit confusing
If you used the official client of Let's Encrypt, build by the EFF, called certbotand you've used the official how-to on https://certbot.eff.org, you should have found the step-by-step instruction on the bottom of that official how-to page: https://certbot.eff.org/lets-encrypt/debianstretch-apache Look for the " Automating renewal" paragraph.