Trying to reset System Admin code via reset tool

Greetings,  @SWAT518. I'll direct you to the best help for fixing the error about being unable to authenticate the reset code for QB POS needs further internal attention.

There's a need to check your account in a safe environment to ensure that its data are accurate and safe. Considering that, I recommend contacting Merchant Services and raising the specific error you have with resetting your QB POS V19 password. 

Here's how if you have a QuickBooks Online (QBO) account:

1. Sign in to your QuickBooks Online company.
2. Select (?) Help.
3. Select the Assistant tab to get help from the QB Assistant, or choose the Search tab to enter your question and find Help articles.

If you have a QuickBooks Desktop (QBDT) account that's connected to your POS, feel free to utilize these steps:

1. Go to the Help tab and pick QuickBooks Desktop Help/Contact Us.
2. Type in a short description of your issue.
3. Then, click Continue.

You can also click this link to contact our support without logging in to your account: Contact Us.

If you wish to learn how to check the status of your customer's payments, check out this article: Learn about funds on hold in QuickBooks Payments.

Once a question pops into your mind about changing your password or any important sign-in details of your POS account, you can always look back here and leave a reply below. Take care, and have a good one.