Go to DXKeeper Config, Defaults tab. You can enter the station callsign there.

73,
Tim - N3XX

In Dx keeper the blue station call is flashing, no matter what I do I cannot enter my callsign into the auxiliary boxes.

+ On the Configuration window's General tab, do you have the "Main Log QSOs options" panels' "Require Edit to modify logged QSOs"
box checked? If so, then on the Main window's "Log QSOs" tab, you must click the Edit button above the Log Page Display (on the
left) before you can enter your callsign into the auxiliary boxes.

+ As Tim N3XX suggested, setting your "Station Callsign" on the Configuration window's Defaults tab will eliminate the need to do
this each time you log a new QSO.

+ If you have many logged QSOs that are missing a "Station Callsign" item, you can fill them in "en masse", as described here:

<https://www.dxlabsuite.com/dxlabwiki/QSOModifying>

+ Don't skip step 1 !

73,

Dave, AA6YQ