Airbag ecu

We have 3 skodas.

My son has a 2013 superb estate,  I since have bought a 2018 kodiak. 

My son uses his for private hire.

We have just bought a 2011 octavia scout.

Airbag light came on a few days ago.

It's done 104k  with pretty good service history. 

My scanner A launch x431,  will not connect to the airbag ecu 

Found a 5amp fuse blown  ih rhs dash 

Still not connecting to scanner. 

Removed airbag ecu, purchased another from Ebay with same oart number , apart from the one removed made in China. 

Anything else we need to look for?

Thanks