Parcels

If you were one of the lucky 333 to solve the 22.04.05_Update email riddle, you got a parcel containing:

A letter from Sente (with a code on it)
A badge
A tourist information sheet
Some Cards
Stickers

The codes at the bottom of the letter seem to be unique.

BigBadDaryman:          1=I
rowlock:               11=E
Russell_k:             12=T
boac:                  15=E
spaceXplorer:          35=E
chippy:                40=T
vibration13:           41=9
Rob_Riv:               48=T
Reason:                55=L
lotusflower:           62=E
StevenapeX             99=L
Muffin:               100=O
number9dream:         109=O
brat-sampson:         114=U
ellipses:             118=R
Porka25:              126=O
Xara:                 147=J
RobPal:               170=S
Flidget_Jerome:       176=G
chrome_halo:          177=A
Nerfball              178=M
Kastanok:             179=E
KillSwitch:           187=E
Enigmaster:           188=L
D4N:                  189=E
gjindancer:           195=E
Xanatos:              198=Y
Der_loki:             251=R
Snowball:             252=G
karlosuk:             255=S
Catfurnace:           259=K
earlgray:             266=D
Solaris:              269=T
fimacmo:              272=K
dopefiend:            273=K
Lazarus:              283=D
Salkunh:              289=N
James Lyon:           294=N
tanner:               296=U
Openfly:              300=S
sequoya:              307=V
AdamF                 310=T
arieh:                312=Y
jerryt:               316=Y
bocahedron:           326=E
othuum:               328=E
MrShifty              329=W
Wishi-san:            332=R

__________ET__E___________________E____T9______T______L_____
______________________________________LO________O____U___R__
_____O_________________________________________________OA_E_
______ELE_____E__Y__________________________________________
__________R___S___K_________T__KK_________D_____N______U___S
______V____Y___Y_________E_EW__R_