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://.:, 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:
1. Connect WIFI
2. Start clean instance of Element APP
3. Select "Other" from Server Selection Menu
4. Fill address field with the local Matrix server address
5. 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).