Is your feature request related to a problem? Please describe.
When I use mobile internet and I press on "All" to select a category, I get no reaction for 1-4 seconds (I guess while you are fetching the categories).
Describe the solution you'd like
Immediately show a loading Icon/text/whatever while you are fetching your data.
Additional context
Maybe check all places where you need to fetch data for a reasonable visual feedback. A loading icon is 100x better than an inresponsive App.
Is your feature request related to a problem? Please describe. When I use mobile internet and I press on "All" to select a category, I get no reaction for 1-4 seconds (I guess while you are fetching the categories).
Describe the solution you'd like Immediately show a loading Icon/text/whatever while you are fetching your data.
Additional context Maybe check all places where you need to fetch data for a reasonable visual feedback. A loading icon is 100x better than an inresponsive App.