TTIG used in V2 was working for nodes in V3 but not anymore

Hello!

I have been changing my nodes to V3. I have kept my TTNIG gateway in version 2 since I have read it is not yet supported in V3. Everything was working great until yesterday. When I access to the gateway in ttn I can see traffic from my nodes but nothing is displayed in The Things Stacks as it used to. Like I said, it was working before with no problem (I have tried reseting the nodes also). Someone with the same problem?

Thanks!