Renew certificate

[sashalarsoo]

Hi, when passing argo to gateway api using a backendtlspolicy i noticed that the tls failed because of cert expiration. So i went into secrets: i have two secrets: argocd-secret with a certificate containing the local dns (argocd.argocd.svc.cluster.....) and argo-tls-cert with external dns and chain of certs inside but also expired. My backendtlspolicy use the domain of this cert.
I dont want to pass in insecure mode, i tested it and it makes values of apps disappear. So my point is, is it a problem of certificate expiration cause it was working in https using ingress and doesnt work anymore using gateway api or something else ? And if so how can i renew them.