Apache disable https redirect to renew certificate - http

Question

I need to renew my letsencrypt certificate. For that, I need to disable the http to https redirect.
However I can't manage to to that.
I am running Apache und Raspbian. Here's my sites-available/000-default.conf:
<VirtualHost *:80>
ServerAdmin example#mail.com
DocumentRoot "/var/www/html/tennis/public"
DirectoryIndex index.php
<Directory /var/www/html/tennis/public>
Options All
AllowOverride All
Order Allow,Deny
Allow from all
</Directory>
ErrorLog ${APACHE_LOG_DIR}/error.log
CustomLog ${APACHE_LOG_DIR}/access.log combined
#RewriteEngine on
#RewriteCond %{SERVER_NAME} = my.domain.com
#RewriteRule ^ https://%{SERVER_NAME}%{REQUEST_URI} [END,NE,R=permanent]
</VirtualHost>
I though commenting the last three lines out would solve the problem, however I still get an 301 redirect to https.
My .htaccess looks like this:
<IfModule mod_rewrite.c>
<IfModule mod_negotiation.c>
Options -MultiViews -Indexes
</IfModule>
#Header always edit Set-Cookie (.*) $1;Secure
Header always append X-Frame-Options DENY
#Header set Connection keep-alive
RewriteEngine On
# Handle Authorization Header
RewriteCond %{HTTP:Authorization} .
RewriteRule .* - [E=HTTP_AUTHORIZATION:%{HTTP:Authorization}]
# Redirect Trailing Slashes If Not A Folder...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_URI} (.+)/$
RewriteRule ^ %1 [L,R=301]
# Handle Front Controller...
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^ index.php [L]
</IfModule>
I can reach the website via http if I use the IP address, so I know that http is still working.
So I can't figure out on which point I still got the redirect to https. When installing the certificate the first time, I used the certbot to always redirect to https, may be it sets this redirect somewhere else?

Answer 1

Okay, this is not a problem from my side at all. My dyndns provider got an issue with his certificates and therefore this error occurs.