Hi Trying to update new gateway password on QB but not updating it so FPS submissions are being rejected?

Let me get the help you need to ensure you're able to update your new gateway password, winterdanceprop.

We can do this by going to the Account and settings page, from there update your credentials. Here's how:

1. Click the Gear icon at the top. 
2. Choose Account and settings.
3. In the left menu, select Payroll. 
4. Go to the Online filing with HMRC section and click the pencil icon.
5. Enter your credentials. 

If you're unable to update, try resetting your login information by clicking the Forgot your password link. Once done, try to update it again. 

For more information about authorising QuickBooks to interact with HMRC, see these articles: 

• Our comprehensive guide to Making Tax Digital (MTD)
• Making Tax Digital (MTD) - FAQ
• Turn on RTI reporting to HMRC in QuickBooks Online Standard Payroll

I've also included some references that you can read through for more insights about submitting a VAT return:

• Submit a VAT return to HMRC - MTD for small businesses
• Authorise QuickBooks to interact with HMRC - MTD for small businesses

Keep me updated on how things turn out. I want to ensure this gets resolved for you. Have a good day!