I don’t see a signature option.
Add a signature to the forum settings so people can add their operating system details, external apps and versions, java version, and JME version. This is what other help forums use the signatures for. That way, before even replying people know all the basics.
Once add, update the welcome message to let people know they need to fill it in.
Typically, if its not filled in, other users let them know its good forum etiquette and will encourage them to do so before answering.
Intel core i3, 16mb ram, onboard graphics, java 8.101, blender 2.78, gimp 2.8, jme sdk 3.1 stable