now wont work on my firestick

Hey guys,

I have been using Kodi on my firestick for a while and have never had any problems.
Recently my amazon firestick updated to ‘Fire OS 5.2.4.1 (573210520)’ and I have had nothing but problems ever since. When this first updated I was able to open the kodi app however every time I would try to watch something a error message would appear saying No Feed Available (or something along those lines).
I then (stupidly) decided to uninstall the kodi and re-install the latest 17.1 version in hope that this would solve my problem however it has only made things worse.
Now everytime I try to open kodi a screen appears saying “Preparing for First Run. Please Wait” with a loading bar. Once the bar has filled the app seems to freeze, the screen goes black and then takes me back to the home page. When I try again nothing happens at all.
I have looked and various chats (with lots of people having the same issue) and have tried going onto the settings, Force stop/Clear Data/Clear Cache but this does nothing. It only opens the kodi preparing first run thing and nothing else.
I have tried to uninstall again and install in different ways but nothing seems to work.
I am not very technical so please could someone help me in simple terms.

Many thanks,