Namecheap SSL Certificate installation question

Im looking to use my namecheap wildcard certificate for bitwarden. Im having a tough time with the format that bitwarden/nginx is expecting.

From namecheap I got the following:

__ourdomain_org.ca-bundle
__ourdomain_org.crt
__ourdomain_org.p7b

I know this isnt exactly a bitwarden issue, but im a little in the dark as to how to get those files into the format that bitwarden/nginx needs. Any help or guides would be much appreciated.

Have a look at these:
https://knowledge.digicert.com/solution/SO17482.html
https://www.namecheap.com/support/knowledgebase/article.aspx/9874/2239/easywp-how-to-add-ssl-to-your-wordpress-site