app crashing during ‘self analysis’ iOS

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StanDuke
app was hanging when I tried ‘self analysis’ with the chess engine, happened in puzzles and after games. Updated the App and now the app closes when I select that option. Doesn’t seem to be any widespread issue… any possibilities? Are there cache files that I can delete? Maybe I need to delete and reload the app…
StanDuke
Deleted the app and reinstalled…. Fixed the issue and fortunately my phone remembered my login