Is this the first time you click on the link? If it isn't, and you previously received the 'successful activation' message, then it means that whoever invited you selected the incorrect Steam profile
Pretty sure my friend/referrer didn't mess it up and I was signed into my steam acct when I first clicked the link and got the success confirmation. Based on the other comments here today, seems like there might be a bug with new user onboarding
Anyone happy to share the current rough delay between being you being invited/referred and when you got your invite? was invited 4th June and wondering if i got caught in-between invite type changing - working forum account but no email Thank you!