TTN integration

TTN integration

Hi
I use Dragino LT22222L connected to TTN. 12 days ago was last time i got data from TTN to Tagoio. Data from /to LT22222l andd TTN are fine. I am trying now to reconnect webhook connection between TTN and Tago. All I get is "Fail to send Webhook- Request". I cant see any wrong in setup. Just to mention, I have Dragino door senzor, connected to Helium and integrated to Tagoio and it works fine. Is it allow to mix different Lorawan servers? 
Please help.
Thanks