webinteface no https - 384.16_1-geda9010451 on RT-AC88U

[StefanP]

Hello,

i'm a n00b on asus - merlin and a beginner few days since a have the asus merlin router.
Flashed with ASUSWRT-Merlin RT-AC88U 384.16_1-geda9010451 on RT-AC88U.

Webinterface Port 80 works and the https port wont work.
Make TLS Handshake in firefox but then connection break and no loginform or webinterface is looking to me.

I connected via wlan and have no LAN Cable inside (i will config the router first and test and then goes in the working state with lan cable and alle my wlan clients also).

I have set the nvram with a script but no ssl work on port 8443