Thank adding a post, @Mike1953.
I'd be happy to help guide you to the right support who can help check and investigate this further for you.
Since you're still receiving the same error message after refreshing your account token, I recommend contacting our Merchant Support to check this further for you. For the support's contact information, you may check it here: Which Payments product do you need help with?.
You may also refer to this article if you have any other questions about the security of the Merchant Services account: Access your Merchant Services account FAQs.
Our doors are always open here in the Community page, feel free to add a post if you have any other QuickBooks or Merchant concerns. I'm here to help you however I can.