element-android Cannot connect to Local Network Matrix Server using HTTP

Describe the bug

After installing Element APP on Android 11, I started the APP and try to configure my local Matrix server using WIFI connection. I fill the Server Address field with http://<MATRIX_LAN_HOST>.<LAN_DOMAIN>:<MATRIX_SERVER_PORT>, but it results in this message: "No network. Check your Internet connection".
If I poweroff Wifi it seems to work (I got another error message using the same address), but my LAN has Internet working.

Using the same parameter from RIOT Web client works correctly

To Reproduce

Steps to reproduce the behavior:

Connect WIFI
Start clean instance of Element APP
Select "Other" from Server Selection Menu
Fill address field with the local Matrix server address
The error appears: "No network. Check your Internet connection."

Expected behavior

Connect to the local server without issues

Screenshots

If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

Device: Cubot QUEST
OS: Andorid 11

Additional context

1.1.6 - Google Play Store
Homeserver: http://matrixhost.lan:8448
riot-web: 1.6.2
olm: 3.1.3

Using the Mobile Data Connection seems to work (without reaching the address because it is in my LAN).

May 05 '21 09:05 bahamut657

I need help on this issue as well. I don't want to set up an entire SSL setup to try this app out. Works fine locally on my iOS device with http.

Jul 29 '22 20:07 Any-Fuel-5635

I have the same issue with Element Android. I downloaded PingTools from Google Play, attached to WiFi, and could successfully ping the IP of the Matrix Synapse server. Element Android displays "No network. Check your Internet connection" when same IP (with port) is typed as server URL.

Dec 13 '22 16:12 carolyn-f

Running into the same problem with the android app. The windows desktop app works fine with the correct url, Just wanted an easy offline Setup for a theater performance where messages are sent live on stage. Obviously in this situation the whole wifi network is not connected to the Internet, so http is totally fine for this scenario.