Hi Fedora Project 
We have just announced the first major “Ignition” release of our next generation mobile client, Element X! This client has been rewritten from the ground up with a focus on usability, performance and stability. In light of this release we have recently configured your homeserver fedoraproject.org to support Element X, however due to the custom domain name configuration your homeserver has, some action is also required from you.
When setting up this homeserver you chose a custom homeserver name of fedoraproject.org and configured some "well-known" JSON files hosted on your own servers. These files are important to how Matrix works and to enable Element X support on your homeserver the following changes are required. Please note, no action is needed for other Matrix clients, these will continue to work as they have done before.
Please ensure the file https://fedoraproject.org/.well-known/matrix/client, which is hosted by you, has the following content:
{
  "m.homeserver": {
    "base_url": "https://fedoraproject.ems.host"
  },
  "m.identity_server": {
    "base_url": "https://vector.im"
  },
  "org.matrix.msc3575.proxy": {
    "url": "https://fedoraproject.ems.host"
  }
}
Please note, if you have customized your client well-known file, it is important to add the org.matrix.msc3575.proxy entry to the JSON file for Element X support. If you have any questions or encounter problems when making these changes, please contact our Support team.
Once the above changes have been deployed on your side, you should be able to login using Element X (available via Apple’s App Store and Google’s Play Store)! To find more information about Element X please see our blog.
Thanks,
The Element Team