After the initial problem with the app which nobody else seems to have experienced I made quite slow progress. Some easy early clues, FOI 1d, but like many Paul puzzles, once you nail the long answers, it becomes much easier. LOI was 17d which I also thought would be a COD contender.
All in all I thought this was a brilliant puzzle. Some absolutely superb clues that really made me smile when I got the parsing. His best for a while. Thanks Paul and thanks as ever for all you posters on here who gave me valuable hints.