QSL Management - eqsl upload fails

[4X1ST]

Hi - I added a new secondary special event callsign, 4X0AAP/36.

eQSL upload from QSL Management is failing: Error NO MATCH ON APP EQSL QTH NICKNAME: SPECIAL EVENT 2020

eqsl1.png (80.32 KiB) Viewed 1219 times

L4OM config is:

eqsl3.png (15.5 KiB) Viewed 1219 times

The nickname is configured correctly in eQSL:

eqsl2.png (24.44 KiB) Viewed 1219 times

LoTW upload works fine. eQSL uploads work fine for my main callsign 4X1ST and other alternates.

What could be the issue please?

[G4POP]

Ask EQSL but I am not sure if you can use spaces or long nicknames