on my dokploy instance i attempted to host a static website, but i ran into troubles with letsencrypt. after assigning the A record to the ipv4 address of the dokploy instance, the letsencrypt cert failed to work even after 48 hours.
so i started trouble shooting: googling didn't yield a quick solution; mostly complaints if letsencrypt took more than a few minutes. recreating the domain and rebooting the server didn't help either.
i didn't know where to find logs at first. after some searching i found it: Settings -> Server -> Webserver -> Traefik -> Watch logs. in the logs i spotted ipv6 adresses. corrected the DNS AAAA record and everything worked after a few seconds.