APPLE WALLET - everything other than bank cards keep dissapearing from Wallet

When trying to access cards in the Wallet app I find they have been removed. Banking cards seem to be permanent but everything else (boarding passes, store cards, train tickets) all get removed. I add them again, next day they disappear. I’ve not changed anything in settings and running the latest iOS version. This problem only started recently for me but looking for answer seems to go back a long time. Has anyone actually found a resolution other than the usual “turn it off and on”