Just purchased ultimate collection for seekers, where put content id?

Hello, I just recently came back to the game and wanted to update my expansion content. So I purchased the ultimate collection with seekers in it. Did this tru steam. I have the registration numbers for it but was wondering so I still need to update my content id/register the addon thru play online? Cause when I clicked on the update content id tab it waits a little but then tells me to do it thru account management? I looked on the website in my account management section and there is no spot to add the registration number for seekers. Also it shows all the other expansions active but seekers, so I don't think steam auto does this for me? The only thing I haven't done yet is fully log into the game... Maybe this will promted me to then? Or auto notice that I bought the collection then? Any help would be appreciated, thanks.