I have about 8 personal sites on DigitalOcean and all are HTTP. I successfully encrypted a free.domain.tk to test LetsEncrypt but now it is inaccessible.
I think when the server was updated from Linux 14.04 to 16.10 the trouble began…
I think the problem is because, I foolishly and permanently redirected (using 301) to the HTTPS site.
I would like to start again and have just created another free test which is currently propagating. I was wondering if there are any tests which can be performed before trying to encrypt the new site.