I'm trying to renew our paypal express certificate. I went to PayPal and clicked on "renew certificate." When I downloaded the certificate and went to copy and paste it to replace the old certificate (Commerce -> Payment Setup -> Configure Paypal Express), ShopSite says "Missing or incomplete Digital Certificate." I'm pretty sure this is because the new certificate does not have "-----BEGIN RSA PRIVATE KEY-----" at the beginning, it instead has "-----BEGIN PRIVATE KEY-----". If I add in the "RSA", it allows me to save, but the certificate does not work.
Any ideas of what I need to do to renew this certificate or where I might be going wrong here? Thanks in advance.