I love the sliding screen door I bought from Elsie at nuCamp about a year ago. I didn't realize how much I loved it until it malfunctioned last night. I went to open it and all of a sudden it was hard to open. Up until then, it opened like a breeze. Nothing special happened last night. I finally got it open and noticed a string on the bottom that was broken and flapping in the breeze. I honestly do not know how this thing works. But I guess I will be learning soon. Does this sound like something that can be fixed? Or will it have to be replaced? Everything else about the screen door is in perfect shape and it was a PITA to install. But I need it. I rely on it. Can't live without it. Suggestions? Thank you in advance.