Same situation
Bought a blackface ux2 off ebay, thought all is good. Tone farm 1 doesn't work on windows 10 and 2.5 is same as all else unauthorized.
Not exactly wishing to splash out 100 bucks to get the software
C'mon Line6 do us all a turn, what with being stuck indoors due to covid 19.
I thought the ux2 had a software agreement thing internal to the device