Reinstall SU Pro 2017 after PC Reformatting

Had to reformat PC. Uninstalled/deactivated current license, but when I try to reinstall (after reformat) it fails - “too many computers”. Any idea how to correct this?

Last year, when the covid thing was going on, all classic license holders received an extra activation for working at home.
Did you by chance activate it on more machines suring that time.
They’ve withdrawn the number last november back to the original number of activations.
(Still, you already got an extra activation for crashes and stolen devices etc.)
There must be some machine where it is still activated.