Element can't access other servers but matrix.org

[Error504TimeOut]

Steps to reproduce

1. Sign out
2. Open the sign in page
3. Try to change the homeserver from matrix.org to something else

Outcome

What did you expect?

Selecting the homeserver as usual and being able to log in

What happened instead?

When trying to click next after typing in the homesever URL, it fails with " .well-known not available". I have tried to select another Homeserver on two different devices with three different servers and two different Synapse Versions and several Element Versions from F-Droid. No combination worked. Trying to log into a custom homeserver on: the web, the flatpak version and on an iPad all worked so seemingly this seems to be an issue with the Android version.

Your phone model

Pixel C, Redmi Note 10S

Operating system version

Android 8.1, Android 13 respectivly

Application version and app store

Element Version 1.6.20 F-Droid, Element Version 1.6.22 Play Store

Homeserver

Synapse 1.119.0/1.116.0, Synapse 1.119.0, Synapse 1.119.0

Will you send logs?

Yes

Are you willing to provide a PR?

No

[Error504TimeOut]

Also, while forks of Element like SchildiChat also did not work, independent projects like FluffyChat have been able to successfully log in

[Error504TimeOut]

I tried to downgrade to 1.110.0 which is just an arbitrary value I picked. Running this version, I could log in and upgrade the server back afterwards.

[slagiewka]

Same issue here. I have cleared out the storage, trying to see if clean state will fix the abysmal performance of the app.
Little did I know that I would end up being locked out.

.well-known not available which is obviously not true. The well-known is under domain/.well-known/matrix/server which is exposed by Synapse.

Federation tester works:

DNS results

server name/.well-known result contains explicit port number: no SRV lookup done

I just installed FluffyChat and it's insanely fast. But most importantly, it... works.

[Error504TimeOut]

This is another thing I noticed, only Element based Apps like Schildi (and Element ofc) seem to have this issue

[SebjuFrab]

Same issue here.

[mrSaT13]

will there be a solution to this problem?
I would like to use your app. without setting up anything else,
Element X has no such problems....
can you do the same ?

[Error504TimeOut]

I seemed to have missed something. To fix this, provide a client.json under .well-known/matrix/client.json after this schema

{
  "m.homeserver": {
    "base_url": "https://<fill accordingly>"
  }

If you have your matrix server running under a sub-domain, make sure to enter it in the JSON, but not in the App.
That at least fixed it for me.