Please follow the below template, it will help us to help you!
normal work of pi-hole.
every 1-2 days, often at night FTL went offline and lost connection to API. I can only restart the rp3 and after that pi-hole runs fine. I have tried to do pihole -r. A log cannot be uploaded during the event, but I have done a log after restarting.
Pi-hole connects to dnscrypt on port 5300 but dnscrypt seems to work even if FTL is offline. So I think it must be a problem of pi-hole.