Call Blocking and Identification

I have been using the Truecaller App for years however after i recently updated my iphone X software to 14.5.1, the features of this app dont work properly the icon Call Blocking and identification keep dissapearing and the true caller app keeps sending me a message saying i am not protected as the app is not enabled in Cal Blocking and identification. I have deleted the app, rebooted my phone and reinstalled the app to no success. Please help.