From what I recall - this issues comes when "Domain Name" on certificates is empty. Can you please confirm in your ACM if your certificates have appropriate Domain Name ?
Edit: To fix it, you need to use FQDN e.g.
./easyrsa build-client-full client2.example.com nopass
This will generate certificate with correct domain i.e. client2.example.com and that should make it visible in the Client VPN console. I'll provide feedback to the service team as well on this as we should clarify our documentation bit more.
Can't use ACM certificate in Cloudfront ChinaAccepted Answerasked 6 months ago
Client Certificate Managementasked 6 months ago
Using a subordinate certificate authority from ACM Private CA for mTLS client certificate authentication with MSKasked 8 months ago
ACM import certificate error - The certificate chain provided is not in a valid PEM format.asked 18 days ago
SSL Certificate showing as not in useasked 4 months ago
ACM Certificate not getting renewedasked a month ago
CF distro and ACM certificate in different accountAccepted AnswerMODERATORasked 4 years ago
SSL Certificate Ineligible and not in useasked 17 hours ago
Client VPN Endpoint Creation - Not Detecting Client Certificate in ACMAccepted Answerasked 4 years ago
ACM Private CA Certificate Revocation Check is not Happeningasked 5 months ago