MR6400: Can't view LTE Dial Up Settings

MR6400: Can't view LTE Dial Up Settings
MR6400: Can't view LTE Dial Up Settings
2018-09-26 19:36:23
Model : TL-MR6400

Hardware Version :

Firmware Version : 1.0.17

ISP :

Hello.
I just got my TL-MR6400 (v2) and tried to set it up. The Admin page is working, but when I try to access Network -> LTE Dial Up I only see a blank page, with the help text to the right (see attachment). I have to turn on roaming for my provider to work. I already did a Firmware upgrade and tried different browsers but it didn't help. Is there any advice?
File:
tplink2.pngDownload
tplink1.pngDownload
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