D&D Online

So I am kind of stuck not sure what to do. I wanted to try out a multi class build and I made a PDK and then just leveled it to 15 as a fighter. Then I bought a +1 Lesser heart and reincarnated as a Pallie. Then I hit the Bridge in Between and she starts training me as a fighter and will not give me an option to leave or change classes.

I am not really sure why this happened obviously I missed something. I thought I did all the reading and would understand the process but something is wrong.

Can someone explain to me in detail what I am supposed to do. The build I was trying was this. In 15 to 20 there is some Monk classes so the fighter class has to go away at some point.

1 (Formerly Fighter) Paladin:
2 Paladin
3 Paladin
4 Paladin
5 Paladin
6 Favored Soul
7 Paladin
8 Paladin
9 Favored Soul
10 Paladin
11 Paladin
12 Paladin
13 Favored Soul
14 Paladin
15 Paladin