Hi Murat,
Did you just apply the cert to the https main-loadbalancer-group and no other group?
![https_lb_cert.png](/legacyfs/online/fusion/99536_https_lb_cert.png)
Is the <REM-IP address> you used in the URL the CN value in the CA-signed certificate? If the cert is an FQDN use that rather than the DNS mapped IP address.
Regards,
Rob