Elastic beanstalk url is not https enabled after adding an ssl certifcate to its attached load balancer

Hello team,

I have a bit of a peculiar issue. I set up an application using elastic beanstalk, created an ssl certificate with acm which is attached to a domain. The ssl certificate is the attached to the loadbalancer, a 443-https listener was added and the 80-http listener is directed to the 443 listener. I created a cname record to point to the elasticbeanstalk url and another subdomain as an A record to the alb dns. Both domains are https enabled and http requests are redirected as expected.

However, I have a few partners who would like to access the application using their domains, so I expect that when they either point their domain to any of my subdomains or the load balancer dns or beanstalk url, the page they are directed to is https enabled but that seems not to be the case, the sites are not usually secure, I also ensured the partner domains are ssl enabled too.

In a bid to better understand, I tried to access the alb dns and EB url and both of them are not https enabled either. Is there a way to make either or both to be https enabled? It is really important that these partners can access via https when they point to the domains.