Hello Allice,
I login and get to the KDS without any problem, same as you:

The issue starts when i click on download, a new chrome tab opens to nxp.flexnetoperations.com (i think this a nxp verification server or something like this):

And after a moment it directs me to my nxp profile home page, but no to the product information to chose the versión as you get:

the other tab remains on the kds page:

I try with Chrome an Edge on win10 and in other pc, too. Same issue in both cases
So, i suppose there is something wrong in my NXP account that fails with the authentication.
Robert, is this the same issue you have?
BR,
Iván