Please correct my English sentence. Especially, my use of verb tenses. Is "I had asked" correct? I was really in trouble. I used Mercari, a flea market app, and bought a light. After I installed it on the ceiling, I could never remove it because of the defect in the stopper. To remove it, I have to pay a tech person five thousand yen. I had asked the seller to cover the cost, but I was too tired of the negotiation to continue. So I gave up.