iTunes Matc won't add my mac

[gw0gvq]

My usual mac I have got to send to be repaired, so while its away I'm using an older mac. but it won't add my computer to iTunes match. I try to click the icon but it doesn't click . Any advice please?

 

[Frankfurt]

Too many computers authorized?

 

[gw0gvq]

I don't think so I only have 1 authorised

 

[Frankfurt]

Did you authorize the older Mac too? Both have to be authorized if you want to use match on both.

 

[gw0gvq]

Originally I did and thought it would still be alive , but some tunes from Apple Music I downloaded to my library aren't showing .