thank you, gentlemen
so to sum it up in this case the proper ways is:
- delete the old cert link
/etc/letsencrypt/renewal/bereskapi-ha.duckdns.org.conf
- delete the current cert
certbot delete --cert-name btcpay.bereskapi-ha.duckdns.org-0001
- create new cert
./certbot-auto certonly --standalone --preferred-challenges http-01 --email your@email.address -d btcpay.bereskapi-ha.duckdns.org
- repair and clean up
./certbot-auto update_symlinks
Or am I missing something?