I remeber I added http2 by:
sed -i "s/listen 443 ssl;/listen 443 ssl http2;/" /etc/nginx/sites-available/$domain.conf
I remember I also tested my packets are transferred in http2 here:
And I got a positive answer — indeed I use http2.
But today after about a month I checked again and I saw that I don’t have.
Might it be that the weekly-cron
certbot renew -q command reverted my Nginx conf file?
If so, how do I make sure it no longer happens?