iRangeX iRX8 with Frsky x4r-sb binding / Pair

So I've been trying for a full day now but can't seem to make it work. I'm using the FrskyX mode, this one works with my 2,5" but not with my Frsky X4R-SB

I'm using the following settings

FrsykX
Failsafe: Hold
AD2Gain: 100
Freq-Fine: -41
Format: EU
RSSICHan: None
S.Port Out: Enabled
Txpower: 150w
Fixedid: 123456
Channels: 16
MixerGUI: Advanced