Why don’t some maps work – 1000+ MCPE MAPS FOR MINECRAFT POCKET EDITION GAME Review

When I first downloaded the app all the maps that I have purchased worked, then one by one new maps came out and as I tried to download them it crashes the app. Why dose this happen, please fix it. Date sent 4-4-19 Date problems started 1-2-19 Date bought 3-8-18
Review by Awesome2.080.4433213322 on 1000+ MCPE MAPS FOR MINECRAFT POCKET EDITION GAME.