embedding lumi file into rise 360

I have been trying various options too. It shows this error "Please enter a valid URL or iframe". H5P content created on Moodle hosted on AWS server is also working fine but not Lumi Cloud's H5P content. I suppose there is some URL or source restriction on Articulate.

I have also tried these help pages:

1. Rise 360: How to Fix Invalid Web Embed Code - Articulate Support: My URL complies with all requirements.

2. Checked embedly for Lumi but it doesn't have this in the list. However, even my Moodle content is hosted on a non-listed URL and it works fine.

3. Checked on https://www.whynopadlock.com/ as given in Rise 360: Embedded Web Content Is Missing or Blank - Articulate Support and it ticks off all the mandatory points. It gave these two warnings:
- Force HTTPS Your webserver is not forcing the use of SSL. You may want to add a redirect to ensure a secure connection is used.

- Protocols: You currently have TLSv1 enabled.
This version of TLS is being phased out. This warning won't break your padlock, however if you run an eCommerce site, PCI requirements state that TLSv1 must be disabled by June 30, 2018.

Both of these can only be addressed by Lumi, not by me.

Please help if anyone got a success in this embed.