The software is designed to allow up to 5 federal returns to be filed, so having three returns done should not interfere with amending.
Even if you have already called, you may want to contact TurboTax at (800) 446 - 8848 again for another agent to look at your screen. If needed, request a Mac expert, even if that would mean a call back. For more information about ways to contact TurboTax, see: What is the TurboTax phone number?
To confirm it is not a system issue, here are the minimum system requirements for TurboTax 2016 through 2020 software for Mac Basic, Deluxe, Premier, and Home Business editions.
Operating System
- 2020: macOS Mojave 10.14 or later
- 2019: macOS High Sierra 10.13 or later
- 2018: macOS X v.10.12 or later (64-bit required)
- 2017: macOS X v10.11 or later (64-bit required)
- 2016: macOS X v10.9 or higher (64-bit required)
Processor: Multi-core Intel processor with 64-bit support
Hard Drive Space
- 2019 – 2020: 1 GB
- 2016 – 2018: 650 MB
RAM: 2 GB or more recommended
CD/DVD drive if installing from the CD.
Internet connection: 1 Mbps modem (Broadband connection highly recommended). Required for product activation, software updates, and optional online features
Monitor resolution: 1024×768 or higher recommended
For other troubleshooting system related issues:
Troubleshoot blank screens, missing buttons, or missing images
Troubleshoot TurboTax for Mac updating issues
@arteagagd
