Please try start new character on NEW ID! If it works, then some of your char on old ID is bugged and you need ask OP about repair. Trying log with this ID only lead to server crash ... everytime
search here in downloads 'Freelancer ID changer' or you can try launch cf on new windows profile. changer have option to clear actual ID and new one is added when you start MP. ... why? check my updated post above. more reasons .... !!!!!!! BUT FIRST PRINT YOUR ACTUAL ID !!!!! .....