We are mostly fellow users here. If you want to speak to TurboTax Support to see if they "might" let you use Online TurboTax, you can see if they will provide a special service code to use.
Use the form at the link below to schedule a call back, or it may provide a number. Hours are 5AM-5PM Pacific (8AM-8PM Eastern) Mon-Fri.
Where the form asks what product you are using, be sure to indicate "CD/download" since that is what you have now.
In the issue line just say something like "billing issue. need different product." (without quotes.)
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https://support.turbotax.intuit.com/contact">https://support.turbotax.intuit.com/contact</a>
