Apache Tomcat - Reverse Proxy and wildcard certificate

Question

I have been struggling with the implementation of HTTPS in a Tomcat environment. We use a Reverse Proxy between the client and the Web server on which we have applied a certificate that is also known by the Reverse Proxy. We use a P12 certificate which is called using these keys in the 'server.xml' file :

keystoreFile="certificate.p12"
keystorePass="cert password"
keystoreType=PKCS12

As I restart the service I am not able to access the environment via the Reverse Proxy. One thing that is pretty odd is that I can access it using a self-signed certificate. I then type out the FQDN in the URL and I can log in.

Any insight? Thank you.