Is Credit for property taxes (Illinois) filing year 2021 incorrect? It asks Did you live in Illinois in 2020 and own your home there?

[mmm-423]

The ? icon before entering says:
What is the Property Tax Credit?
You can get a tax break if you own the home where you live. The Illinois Property Tax Credit is available to people who paid property tax in 2021.
If you owned your home, we'll ask you all the right questions to figure out if you get this credit and put more money in your pocket.

When accessing the section, it asks "Did you live in Illinois in 2020 and own your home there?"
We moved to Illinois (purchasing a home) in 2021, and paid taxes in 2021.

Is this a mistake, or does this only apply if you lived in the state in 2020 during 2021 filing?

If you answer No, you are taken back to the main screen. If you answer Yes, you get the following questions:
In 2020, was your principal residence in Illinois?
Did you own your 2020 principal residence?
Did your property tax bill include property used as a person residence?
Have you paid your property tax billed in 2021?

[Anonymous_]

They are one year behind in collections (billing).

When you pay your 2021 property taxes, they are actually for the 2020 calendar year.

[Mike9241]

the taxes you paid in 2021 are for 2020. however, the amount you paid must be reduced by the credit you received on the closing statement for the portion of 2020 you did not own the home.  the net is also the amount that is deductible for federal purposes