ADDENDUM:
You mentioned a concern about preparing next year's 2022 return. Next year, if you transfer your *.tax2021 data file into a 2022 return, if there's a state return in your *.tax2021 data file that you don't need in 2022, it shouldn't make any difference. The 2022 program can still transfer-in a 2021data file that contains states that won't be used in 2022 because that transferring of prior-year data is a different process. I've personally had state returns at times in my tax data file when I didn't need them the next year, and transferring occurred normally without the unneeded state programs installed. (Transferring is not the same as "opening"; see next paragraph.)
What you are trying to do now with your desktop software is not "importing" or "transferring in". What you are trying to do now is to OPEN the *.tax2021 data file which is a different process than the transfer of a prior year's data. 2021 TurboTax can't open your current 2021 file because it doesn't know how to handle the second state's data without the second state program. As I mentioned in a comment above, hopefully TurboTax Support will furnish you a download of the second state software.
