You cannot file an "edited" return. When you could not e-file your return due to the other parent claiming the same child the way to remedy that was to file on paper and mail the return instead. But you removed the child from your return and filed without the child listed as a dependent. THEN---- in order to add the child back as a dependent---you should have waited for the original return to be fully processed and send in a Form 1040X to claim your child.
You have kind of a mess now, and will have to wait for the IRS to sort it out. It sounds like you have put multiple returns into the system, which is a recipe for delay. Do not do anything else now. They are not going to let you change your return via a phone call. And TurboTax cannot do something from the "back end" to change a return that you filed. You will have to be patient and let this play out.
Your ex's amended return will take months to be processed. And when and if you file a Form 1040X -- expect it to take at least six months to be processed, since the IRS is so severely backlogged.
For further help from customer support:
To call TurboTax customer support
https://ttlc.intuit.com/questions/1899263-what-is-the-turbotax-phone-number
Customer support is available from 5 a.m. to 5 p.m. Pacific time Monday-Friday.
**Disclaimer: Every effort has been made to offer the most correct information possible. The poster disclaims any legal responsibility for the accuracy of the information that is contained in this post.**