Is the HMRC calculator showing the wrong year?

I'm just submitting my claim for the last week in February 2021.

The heading of the page indicates "What did this employee earn in the pay period 28 January 2019 to 24 February 2019?

It then goes on to say that "you can adjust the employee’s pay to reflect that February 2020 had 29 days. To do this you can either enter the full amount earned in February 2020 or divide the full amount earned in February 2020 by 29, then multiply by 28"

As Furlough claims relate to the equivalent period in the previous tax year, surely the heading is incorrect and we base it on February 2020 as per the suggestion how to caluclate it.

It remains staggering how HMRC systems continue to get it so wrong.