I'll see what I can do to get the ones needed to change that for you. Yeah something should be in place to tell you what is and isn't accepted for the message or just allow it.
I made a custom join message and used a "?" which reverted to "NULL" guess the system doesn't accept certain characters. I just want the NULL text gone or a refund so I can redo my text.
IG: Jack Blacks Nut Sack
ID: 76561198979737899
Thanks