Impossibe to find a correct CERT to make Element work, SSL Error!

### Steps to reproduce

1. Install Matrix Docker
2. Install Nginx-Proxy Docker
3. Configure Nginx and make let's encrypt cert
4. Tried to generate many different CERT

### Outcome

Working on web https://riot.im/app/

Having problem with ssl error from the app, if i try a self-signed cert, I am able to login on the app, but the login is not working on the web and impossible to make videocall and audiocall woring, it stays IN CONNECTION, sometimes is connecting if i connect from the same network but it closes the videocall

P.S: I am using docker on RPI4, following this guide https://shownotes.opensourceisawesome.com/matrix-server-install-via-docker/

### Your phone model

Huawei tablet M2, y6 2017 pro, samdung s10

### Operating system version

Android 5,6,9

### Application version and app store

1.4.2

### Homeserver

Local Homeserver Matrix-synapse Docker latest

### Will you send logs?

No