The trim option on Instagram is a great way to edit your posts and make them look their best. Unfortunately, some users have reported that the trim option isn't showing on their accounts. This can be due to a few different issues such as an outdated version of the app, an issue with your device's software or hardware, or even an issue with Instagram itself. To fix this problem, you should first check to make sure that you are using the latest version of Instagram which can be done by going into your App Store settings and checking for updates. If there is no update available then try restarting your device and then launching the app again. You may also need to clear any caches on your phone if none of these solutions work. Additionally, if all else fails then contact Instagram support directly who will help diagnose what could be causing this issue for you specifically so it can get resolved as soon as possible!