same thing happened to me. acme running in container on synology nas. it worked before, and I have added CAA records as well.
[Fri Jun 28 00:39:03 UTC 2024] original='{
"identifier": {
"type": "dns",
"value": "xxxxxxxxx.top"
},
"status": "invalid",
"expires": "2024-07-05T00:36:51Z",
"challenges": [
{
"type": "dns-01",
"url": "https://acme-v02.api.letsencrypt.org/acme/chall-v3/369729691707/ZEEWuA",
"status": "invalid",
"validated": "2024-06-28T00:39:00Z",
"error": {
"type": "urn:ietf:params:acme:error:dns",
"detail": "DNS problem: looking up TXT for _acme-challenge.xxxxxxx.top: DNSSEC: DNSKEY Missing",
"status": 400
},
"token": "ogW-6FtXXylJdDxxxxxxxxUoS9pglafWFRVm-AsyL-Q"
}
]
}'