NSPanel resets after reboot

[FlyingPersian]

Hello,

I have flashed Tasmota to my NSPanel (EU) a while ago and by stupidity hooked it up wrongly to the wall so that the fuse blew. Since it didn't fit into my wall socket anyway, I removed it and put it back in the box. I'm now trying to see if it works.

I managed to re-flash tasmota32.bin and tasmota32-nspanel.bin to it. With tasmota32.bin, it wouldn't connect to WiFi at all, so I switched to tasmota32-nspanel.bin. It successfully connects to WiFi, but as soon as it reboots (i.e. when changing the config) it resets. The WiFi-info is gone and the changed config isn't saved as well. I tried using a USB-Powerplug and USB of my PC, same result with both. I definetely set my FT323 to 5V and it should be connected properly as it turns on. When it reboots, the display flashes up 5-6x, then goes dark again.

I'm not sure if I fried anything since it has been working before. The only issue I had before was that the display didn't turn on, but as of now i cannot even change settings. Any ideas?