Hi there, BevSomerset.
I understand the importance of submitting your tax returns on time and I appreciate your effort in resolving this issue on your own. Let me share some information to fix this.
If you're having trouble connecting to MTD in QuickBooks Online, the first thing you should check is to see if you have any outstanding obligations with HMRC. If you have any outstanding obligations, HMRC will not process your return until you meet those obligations. To avoid this, make sure you have no outstanding obligations before filing your tax return.
You can log into your HMRC online account to view all of your open obligations, including any taxes owed, and ensure that everything is up to date and settled before attempting to submit another return via MTD.
Also, you need to enable yourself to send submissions to HMRC for the company file you are using. This can be done by going into the settings for your company file.
Otherwise, if the problem persists, I recommend contacting our Support Team so that we can assist you and look into it further.
Let me know if you still need my help or if you have other concerns about MTD. I'll be happy to assist.
