Translation of arbitrator in German

I remember that after highschool I went to study English in New York. First I did not know whether the city was right for me cause I wanted a place where I would not feel lost. However, it was the right choice.
I have a few other short sentences by tomorrow. How can I pay for all these little translations? If I remember correctly I made also a small contribution through the channel last year... But I don't think you should charge for these ones.
Have you ever done something like that in Spanish? I also think that we should see each other when you're close, I can help you with Spanish, and you can do the same for me in English. Do we have a deal?