I believe this is because it's "der Mantel", a masculine noun. You use dein for masculine/neutral nouns and deine for feminine nouns.
I use jacket instead of coat and it was wrong but ive been using it on all the other statements and it has been correct. Also I said mucky instead of dirty and that was wrong
I wrote " dien mantel ist lang " and duo said wrong. Can anyone tell me why?
This ❤❤❤❤❤ gay asf i would rather be riding a homeless man than this ❤❤❤❤ yall can suck a caterpillar dick.