Verb conjugation of "quälen" in German

I hope you you had a successful week in Dortmund. Because of the bad weather at the last moment I could not get on my flight to Dusseldorf and I have stayed home. I was afraid to fly.
I am glad that i have met you. I'm unemployed at the moment. I have to visit the unemployment office every day, that is the law here. I have studied computer science. I hope that I can help too.
I have made an internship at a law office, but just for two months. Their salary is really bad. Now to my promise to correct your long message. You need to say: 'On Friday' not 'At Friday'.