You are correct, according to what you have told us, you should be able to make the contribution without an error. You may want to try clearing out your browser's cache and cookies.
Here is information on how to delete your cookies:
https://ttlc.intuit.com/community/troubleshooting/help/how-do-i-delete-cookies/00/25978
Here is information on how to clear your cache:
https://ttlc.intuit.com/community/troubleshooting/help/how-to-clear-your-cache/00/26135
Next, here's how to contact TurboTax directly to report an issue:
What is the TurboTax phone number?
The best and most efficient way for you to connect with the right person to get the help you need is to select the version you are using below.
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