Deductions & credits

Your post indicates you're using TurboTax Online, but that's not always correct.  If you're using TurboTax Desktop on a Mac, this is a known issue.

See the TurboTax Help article Why am I getting an error when trying to enter the address for the home where I installed the energy... for guidance.

If you're‌ actually using TurboTax Online, describe (or post a screenshot) of the screen you're seeing.