@Mollcons We’re not suggesting they fix it, just that they should have warned us that HMRC had made a change so we’d have to either upgrade or submit manually.

When it’s a few hours till your return becomes overdue and you suddenly get this problem, you then go into blind panic mode for however long it takes to find out what’s happened. If I’d known in advance I would have avoided an hour of near nervous breakdown! They should have told us as a matter of courtesy.