Is there a way to reset Clash of Clans app data on my iPhone?

Hi, I had installed my clash of clans app in iPhone after shifting from Android to iPhone. While opening the app it by default created an account. To recover my account I wanted to delete the existing account and I did. Following the procedures I had to wait a month to reflect. Now that the account is deleted the app dosent load as iPhone has stored data of the deleted account and trying to load it which is not in the Clash of clans server as I deleted it. And the app is stuck with the account delete request. I tried deleting and re installing the app. The stored data of the game is not getting removed. Is there any way I can do a clean install of the app including the data. Or delete the existing data??

[Re-Titled by Moderator]