Hi there, @info1387.
Glad to have you here on the Community page. I can help you with closing your return to QuickBooks Online (QBO).
You can make a period as filed in QBO without submitting the return to HMRC again. To achieve it, you can follow these steps:
These steps will file the return within QuickBooks only, closing off that period for VAT, and won't duplicate your submission made directly to HMRC.
If you wish to submit your future VAT returns directly to HMRC from QBO, you can review these articles for the instructions:
I'll be around to help if you have any other QuickBooks questions. Just let me know by leaving a reply below. Thanks for coming, wishing you well!