Not sure this is something that can be fixed on server side, but this is the error that I get when trying to connect from eduroam:
Could not connect to childes-db:
Error in .local(drv, ...): Failed to connect to database: Error: Lost connection to server at 'handshake: reading initial communication packet', system error: 104
Not sure this is something that can be fixed on server side, but this is the error that I get when trying to connect from eduroam: