[mashlol]

For me, Firefox on desktop (Windows) and mobile (Android) both give the SSL warning. Although mine appears a bit different than the parent comment:

    An error occurred during a connection to haxxorwpm.0s.is. SSL received a record that exceeded the maximum permissible length.

    Error code: SSL_ERROR_RX_RECORD_TOO_LONG

[lucb1e]

No issues here with Firefox on Linux or Android 11 (installed from F-Droid in case that matters). Strange. I wonder if it's a network difference rather than the workstation setup