I know this hasn't been an easy process for you, rjkokshoorn.

I've checked your posts and found that you've published similar questions thrice. Please know that the first one has already been answered by my colleague, CamelleT. 

You can view her answer through this link, where she shared what to do to prevent logging into your QuickBooks Online account without delay: https://quickbooks.intuit.com/learn-support/en-uk/account-management/re-no-text-message-coming-throu....

I'll be right here to continue helping if you have follow-up questions regarding this topic. Assistance is just a post away, rjkokshoorn. Have a good one!