Problem with WiFi extension card

Having an issue with a Flexy 201 with latest firmware.
As soon as I boot up with a wifi card in the 4th slot, I have trouble opening the web interface when using ebuddy.
Doe the wifi card need fw update?

Is it only having issues with slot 4?

trying slot 3 next

Also are you just connecting straight to the device or is the device on a network?

I was cabled straight to it.
Looks like slot 3 worked.
What can this mean?

hmm that’s strange, could potentially be that the 4th slot is damaged. do you have any other flb cards you could try in slot 4 to test it?

Having issue with slot 3 too.
I’m using a FLB 3271 with fw 8.0 (from label)
Should that be compatible with a Flexy 201 ?

If you remove the card does the device boot like normal?