maybe this topi can help you

https://my.aximmetry.com/post/413-cant-enable-device-setup-in-aximmetry-pro

I update the Blackmagic  and the same problem

Maybe the reason is because the version is free?

are you using the community version? 

if yes you can't use SDI or NDI with this version,  to use sdi you need to buy aximmetry professional or broadcast license.