I have tried multiple times to verify my phone number (by both SMS and voice) but the required code never arrives. Is there an issue with receiving SMS codes in Ireland ?

Hello there, @padraig1. I'm here, and I'll help you get through this so you can successfully set up a two-step verification in your QuickBooks Online (QBO) account.

A possible reason for this is the number you entered in your intuit account is incorrect. You'll want to ensure that the digits you've added is accurate and that it's for the device you're using. To check, here's how:

1. Log in to your Intuit account.
2. Go to Sign In & Security.
3. Verify your phone number.

If everything checks out and the issue persists, try accessing your intuit account in an incognito or private window. From there, set up the two-step verification. Use these shortcut keys to access incognito or private browsing mode:

• Press Ctrl + Shift + N on your keyboard for Google Chrome, and Mozilla Firefox.
• Press Command + Shift + N for Safari.

You can also consider resetting your device's time setting and enabling Set Automatically. If this setting was already enabled, please disable it for a few seconds before re-enabling it.  It allows your phone to receive delayed messages.

Visit this article for more information about using Two-step verification in QBO: Verify your QuickBooks Online account with multi-factor authentication or two-step verification.

Also in case you'd like to change your credentials in QBO, you can refer to this article: Change your email, user ID, or password for QuickBooks Online.

@padraig1, Know that I'm determined to help you get this sorted out as soon as possible. Should you need further assistance setting up verification in QuickBooks? You can always get back to me anytime. It'll be my pleasure to help you out again. Take care!