Can't join Matrix chat

[Alessandro Griseta]

Hello, here is the error message I'm getting:

MatrixError: [403] You are not invited to this
room. 
(https://matrix-client.matrix.org/_matrix/client/v3/join/%23org-mode%3Amatrix.org?server_name=matrix.org&via=matrix.org)

Any ideas? I'm logged in on Element as `superwatermelon98` on the 
Firefox web browser;

```
libird@freeroam:~/Sync $ uname -a
Linux freeroam 6.12.25+rpt-rpi-2712 #1 SMP PREEMPT Debian 
1:6.12.25-1+rpt1 (2025-04-30) aarch64 GNU/Linux
libird@freeroam:~/Sync $ firefox --version
Mozilla Firefox 140.0.1
libird@freeroam:~/Sync $
```

Thanks in advance :)