Failing acme challenge when installing certificate for Tomcat

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Thank you, that was a huge help! I was successful in generating the cert thanks to your suggestion. I have a follow up question now that I have the cert. I have created a bundle.pfx file per the instructions laid out in this thread: Using let's encrypt with tomcat
I have set permissions appropriately of said file and directories and entered the following into my server.xml file:

<Connector
           protocol="org.apache.coyote.http11.Http11NioProtocol"
           port="443" maxThreads="200"
           scheme="https" secure="true" SSLEnabled="true"
           keystoreFile="/etc/letsencrypt/live/fiska11oy.com/bundle.pfx" keystorePass="XXXXX"
           clientAuth="false" sslProtocol="TLS" keystoreType="PKCS12"/>

and I have restarted tomcat. I have yet to get the padlock on my site. It does not indicate that I even have a certificate valid certificate when I view the site in chrome or firefox. Have I missed a step or done something wrong? In the past, I have been successful with this method on a different linux server running WordPress.

Thanks again for your help.