Maybe this will help:
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"debug","ts":1696043881.832145,"logger":"tls.obtain","msg":"trying issuer 2/2","issuer":"acme.zerossl.com-v2-DV90"}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"info","ts":1696043881.8327227,"logger":"http","msg":"waiting on internal rate limiter","identifiers":["user-domain-name.com"],"ca":"https://acme.zerossl.com/v2/DV90","account":"noam@myadminemail.com"}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"info","ts":1696043881.832841,"logger":"http","msg":"done waiting on internal rate limiter","identifiers":["user-domain-name.com"],"ca":"https://acme.zerossl.com/v2/DV90","account":"noam@myadminemail.com"}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"warn","ts":1696043881.8329782,"logger":"http.acme_client","msg":"HTTP request failed; retrying","url":"https://acme.zerossl.com/v2/DV90/newNonce","error":"performing request: Head \"https://acme.zerossl.com/v2/DV90/newNonce\": context deadline exceeded"}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"error","ts":1696043881.833088,"logger":"tls.obtain","msg":"could not get certificate from issuer","identifier":"user-domain-name.com","issuer":"acme.zerossl.com-v2-DV90","error":"[user-domain-name.com] creating new order: fetching new nonce from server: context deadline exceeded (ca=https://acme.zerossl.com/v2/DV90)"}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"debug","ts":1696043881.8332603,"logger":"events","msg":"event","name":"cert_failed","id":"04f890eb-0050-442b-9f73-8aac7784ac91","origin":"tls","data":{"error":{},"identifier":"user-domain-name.com","issuers":["acme-v02.api.letsencrypt.org-directory","acme.zerossl.com-v2-DV90"],"renewal":false}}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"error","ts":1696043881.8333066,"logger":"tls.obtain","msg":"will retry","error":"[user-domain-name.com] Obtain: [user-domain-name.com] creating new order: fetching new nonce from server: context deadline exceeded (ca=https://acme.zerossl.com/v2/DV90)","attempt":1,"retrying_in":60,"elapsed":179.998939402,"max_duration":2592000}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"info","ts":1696043881.8333173,"logger":"tls.obtain","msg":"releasing lock","identifier":"user-domain-name.com"}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"debug","ts":1696043881.833402,"logger":"http.stdlib","msg":"http: TLS handshake error from 20.120.74.197:9536: context canceled"}
Sep 30 03:18:01 ip-10-0-1-67 caddy[374]: {"level":"debug","ts":1696043881.8341722,"logger":"events","msg":"event","name":"tls_get_certificate","id":"94876cb5-d52b-40f3-98a6-2ec00179cea9","origin":"tls","data":{"client_hello":{"CipherSuites":[4866,4867,4865,49196,49200,163,159,52393,52392,52394,49327,49325,49315,49311,49245,49249,49239,49235,49195,49199,162,158,49326,49324,49314,49310,49244,49248,49238,49234,49188,49192,107,106,49267,49271,196,195,49187,49191,103,64,49266,49270,190,189,49162,49172,57,56,136,135,49161,49171,51,50,154,153,69,68,49159,49169,49160,49170,22,19,157,49313,49309,49233,156,49312,49308,49232,61,192,60,186,53,132,47,150,65,7,5,10,255],"ServerName":"gordion.se","SupportedCurves":[29,23,30,25,24],"SupportedPoints":"AAEC","SignatureSchemes":[1027,1283,1539,2055,2056,2057,2058,2059,2052,2053,2054,1025,1281,1537,771,515,769,513,770,514,1026,1282,1538],"SupportedProtos":["http/1.1"],"SupportedVersions":[772,771,770,769],"Conn":{}}}}