Education Law Issues: How to Use Private Message in This Forum

I try to post this question in the section of ＂using the forum ＂,but do not find the button of ＂post new thread ＂there．

Thus , I post this here.

Even I sent private message, the sent box is still empty and I also do not whether my message is delivered or not.

Thanks for any help.

Education Law Issues: How to Use Private Message in This Forum