Could not issue a Let's Encrypt SSL/TLS certificate for AWS Lightsail Plesk Server

[LordLiverpool]

@JuergenAuer It's great to know its possible, thanks.

OK, the closest I found to what you meant was here:

Securing Plesk and the Mail Server With SSL/TLS Certificates

and here:

https://support.plesk.com/hc/en-us/articles/213954265--How-to-secure-a-Plesk-hostname-on-port-8443-with-an-SSL-certificate-Let-s-Encrypt-other-certificate-authorities-

For anyone following on behind me it was this comment that really helped:

After assigning a Let's Encrypt certificate to a subdomain just go to Tools & Settings > SSL/TLS Certificates

Find the option Certificate for securing Plesk and click on [Change] button right to it.

Choose the certificate assigned to subdomain and click OK .

I followed the instructions and I used the Let's Encrypt Certificate I had installed on one of my own domains and I assigned it to the server and also to secure the mail.

So now I no longer access the server insecurely via its IP address i.e. http://xxx.xxx.xxx.xxx:8443

but instead securely like so: https://example.com:8443

Thanks very much, guys, I couldn't have fixed it without your help!

Cheers.