Hi @RubnLegarda,
Thanks for taking the time to post this in our community! This is a great collaboration and we appreciate you posting this here so other developers seeking the same answer can refer to this 
For any developer interested in following this problem, currently encountering this issue, or want to chime in - from our conversation in Jira Service Management, the error message from ssllabs is “This server’s certificate chain is incomplete. Grade capped to B”.
Some discussions about this:
- Qualys Discussions
- Not able to publish our cloud app in marketplace (app developer I’ve helped with SSL certificate error as well. May be this would be with how you’ve certified on your end?)
Cheers,
Anne