Why data-rate showing default value as SF12 in TTN & TTI?

Hi all, was this issue ever resolved?

I have a problem with Ursalink UC11-T nodes always transmitting at SF12. They join at SF12 then transmit every 15 minutes at SF12.

ADR is set. SF12 to SF7.

Many other manufacturers nodes on this network and ADR is working for them.

I have tried this Ursalink on another Network Server and ADR works!

It is therefore a very specific issue between TTN and Ursalink

Any ideas as Ursalink say their device is okay and TTN say the NS is okay…where do I go from here?

Cheers