I don't think that it is a matter of timeout but that the connection is not established for other reason. The response I get in the browser is :
RemoteServer is running (01/02/2026 11:29:21)
Error fetching connection.
The logs in the server are :
com.mysql.cj.jdbc.exceptions.CommunicationsException: Communications link failure||The last packet sent successfully to the server was 0 milliseconds ago. The driver has not received any packets from the server. at com.mysql.cj.jdbc.exceptions.SQLError.createCommunicationsException(SQLError.java:174)
Maybe some file is missing, it worked in the past.