Your dynamic DNS entry has expired due to inactivity.

Hostname: {{fqdn}}
{% if ipv4_expired %}
IPv4 address: {{last_ipv4}} (last update: {{last_ipv4_update}})
{% endif %}
{% if ipv6_expired %}
IPv6 address: {{last_ipv6}} (last update: {{last_ipv6_update}})
{% endif %}
Expiry TTL: {{expiry_ttl}} seconds

The DNS records have been removed. Update your client to restore them.