Hello there, @caitlyn-pither.
Adding your accountant to your QuickBooks Online (QBO) account will help you manage your books and do certain tasks such as undoing entire reconciliations or reclassify transactions.
At this time, there is an ongoing investigation in QuickBooks Online (QBO) about prompted to change the password when inviting users.
Once done, add your accountant again.
Also, I recommend reaching out to our Customer Care team to add your account to the list of affected users. This way, you'll be notified of any updates about the investigation as well as if there's a resolution available. Here's how:
Feel free to post here again if you have other concerns about adding your accountant in QBO. I'll be always around to help. Keep safe.
Thanks for joining in this thread. First you'll have to check the phone number entered in your Intuit Account Manager is correct and has an area code +61 on it.
Here's how to check it:
Once you've verified the phone number, please log back in to your QuickBooks Online account using an incognito window to isolate the situation. Here's how to log in using an incognito window:
Then, attempt to add your accountant once more. If the issue persists, we'd recommend contacting our Customer Care Team so that they can check your account details in a secure form.
Feel free to reply to this thread if you need more help. Have a nice day!