You can use the control panel to upload and download files, click Management > File Management, then you can choose which directory to upload, you can simply drag and drop into the browser. Alternatly you can login with FTP, click System > SFTP Details, the password is the same as the one for the control panel.
Yes! Simply upload the .jar to the main server directory and click Configuration > Startup Parameters then type in the name of your custom .jar file and click Update Startup Parameters
Yes! To create your MySQL datbase click Management > DB Management Type in the name of your database, and add the server IP in Connections, or you can leave it as %. Once you create your database you will see the information to connect to it.
Yes! Every Minecraft server comes with port 8192 open so you can use Votifier, if you need additional ports for other plugins then please submit a ticket.
Yes! We offer Javas version 8 and 11. Just submit a ticket and we will change your Java version for you. Default is Java 8.