This key is only available in the listed countries. If the person you're gifting this to doesn't live in one of them, Steam might prevent the key from being

AD
AI
AL
AT
AX
BA
BE
BG
BM
BQ
CH
CS
CY
CZ
DE
DK
EE
ES
FI
FK
FO
FR
GB
GE
GF
GG
GI
GP
GR
GS
HR
HU
IE
IO
IS
IT
JE
KY
LI
LT
LU
LV
MC
MK
MQ
MS
MT
NL
NO
PL
PN
PT
RE
RO
SE
SH
SI
SJ
SK
SM
TC
TR
VA
VG
YT