FLutter Developer Required urgently -- 2

Looking for a Flutter developer who can work on my app immediately. The first task is to resolve an issue that has occurred. Posts are appearing in category-wise filters but in all sections, posts are not appearing. The first task is to resolve that within no time. The second task will be some new features which will be awarded parallelly to the same developer. Code is organized and simple and developed by a good developer. The developer has left our company now and we are out of a flutter developer. APIs are working fine. You can install the app and signup you will see that in All Sections no post is appearing while in other categories apps are appearing. Kindly see attached video and install app by the link below https://play.google.com/store/apps/details?id=com.emailapk.notifyar 10$ will be budget for this task and rest budget will be for other tasks.