stimulus 3 plus up payment

Rec'd pro-rated stimulus 3 payment, March 2021; when unemployment credit lowered agi, was then entitled to add'l plus up payment; TT not providing the worksheet saying not eligable. I am eligible according to 2019 and 2020 agi. If 2021 income is over the limit, should not affect the plus up payment that was due for 2019 and/or 2020