Dragino LHT65, connect to the "thethingsnetwork", help!

Hi, i did buy my own gateway from Dragino as well. Connected it to TTN per manual.
Then i have several LHT65 up and running. Just use the User Manual. But it is indeed tedious task to copy/type all the hex keys. It all needs to be right for the device to be seen on TTN.
One note, please check on the label it says EU868. I got once a few LHT65 which had the code AS923, this is different frequency band. Device got replaced FoC.

Hi,

I have just received the dragino LHT65 as well and I don’t have blue blink as well.
Did you manage to get it works ?

Thank you

Hi,
Same problem here no blue blink. Coverage is ok. the first batch of sensor worked well the new ones do not connect. Already tested 3 now. Anyone else having issues ?
You can see old and new one here : https://photos.app.goo.gl/8JnfJd2vKdx78ywU8
Old one connects directly, new one never