I solved the problem based on your replies.
- On my router somehow port forwarding for port 80 was turned off
- On my server in httpd.conf Listen was set to only 443
So, if I understand correctly I need port 80 to renew a cert, but for running the website I need 443.
HTTPS is just new to me, this is the first time I use a certificate for a website, and this was my first attempt to renew it.
Thanks for all of your replies!