Currently, when you write a post, you select a category in one of 2 tabs:
1. All categories
2. Popular categories
I suggest 2 improvements:
1. Popular categories - currently it shows 10 categories only - please allow to select the number of popular categories to show (I have 400 so 10 is too little)
2. All categories - when you have many categories, you have to move a slider to find the category you need. This is very inconvenient. Please allow to show the categories as an open list that does not need scrolling.
Keep up you wonderful work.