I learned the hard way. They will ban your account for using any third party application to log in to Instagram. All I wanted to do was save a video in order to try and extract the audio from said video. About a week later I was browsing Instagram and bam, your account has been banned. I have no idea if the appeal will work. I doubt it, as many others have said it didn’t help them. A very valuable lesson learned. Especially if you use Instagram for any business activity. You will be screwed.