after a couple of calls to support I've solved this myself.The issue was that when you click the 'take me there' button to resolve, there's a popup with a 'resu...

I understand the error message, thanks very much, when you say 'try again later', how exactly do I do this? there's no option to resubmit?

I've had a VAT return fail to submit - internal_server_error from HMRC - the guidance in QB says to click 'go for it' on the 'take action' page, the former does...