Thank you for your help so far! I found certbot was not installed - I ran an apt-get install certbot to get it loaded, then the following, with results… getting closer.
root@GeoffNAS:/home/admin/crontab# ./LetsEncrypt-Renew.sh
Saving debug log to /var/log/letsencrypt/letsencrypt.log
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Processing /etc/letsencrypt/renewal/gjschaller.homeftp.net.conf
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Cert not yet due for renewal
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The following certs are not due for renewal yet:
/etc/letsencrypt/live/gjschaller.homeftp.net/fullchain.pem expires on 2020-06-14 (skipped)
No renewals were attempted.
No hooks were run.
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root@GeoffNAS:/home/admin/crontab# certbot certificates
Saving debug log to /var/log/letsencrypt/letsencrypt.log
Attempting to parse the version 1.3.0 renewal configuration file found at /etc/letsencrypt/renewal/gjschaller.homeftp.net.conf with version 0.10.2 of Certbot. This might not work.
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Found the following certs:
Certificate Name: gjschaller.homeftp.net
Domains: gjschaller.homeftp.net
Expiry Date: 2020-06-14 03:50:42+00:00 (VALID: 60 days)
Certificate Path: /etc/letsencrypt/live/gjschaller.homeftp.net/fullchain.pem
Private Key Path: /etc/letsencrypt/live/gjschaller.homeftp.net/privkey.pem
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root@GeoffNAS:/home/admin/crontab# certbot install --apache -d gjschaller.homeftp.net --cert-path /etc/letsencrypt/live/gjschaller.homeftp.net/fullchain.pem --key-path /etc/letsencrypt/live/gjschaller.homeftp.net/privkey.pem
Saving debug log to /var/log/letsencrypt/letsencrypt.log
The requested apache plugin does not appear to be installed