Not able to connect to HMRC

Thanks for your response Caroline 😊 We have checked in the background why it is rejecting and it is bringing up that the client or agent is not authorised. Which is usually a credentials issue if the MTD has already been authorised. If the VAT number is showing correctly in the settings, we need to ask you to go to the cog>account and settings>advanced>under making tax digital toggle it off and then back on and re-enter the gateway information. This should then connect and if you go back you should be able to submit. If that does not work if we could ask you to then sign on to the gateway using those credentials directly(not through QB) and make sure that it is taking you to the correct page. If it is and you are still getting that error please then reply back here and we will investigate this for you.