Help with teleporting

Hi, I have a problem with the teleporting plugin. The firt time that I entered to the server it kicked me cause I had a invalid character (™). So I changed my name and I entered to the server. The problem is that I can´t teleport with people. I can write “/tpa name”, but when they write “/tpaccept” the console says that I have a unknow name. The strange thing is that people can teleport to me.

Thank you all.