Weird I can't login, but I tried on the original Stake site it can, on the OP's web it can't.
Do not log in and be careful of duplicate sites that look the same, it will harm your account. just leave it and don't let adna browse that website. So far it might still look safe, because that's what they plan to do. Keep using sites you trust.
According to what I can tell, there's nothing wrong with the link that bcgs21 provided on his site. It's a plain url with a referral code. There's no redirection, no url shortening, nothing like that.
I'm not sure what problem YOSHIE encountered and why he couldn't log in, from my side everything looked fine.
Having said that, always use caution when accessing websites that are of great importance to you through links on third party sites; you may eventually end up on a phishing site that steals your personal information. For such sites, you should always have bookmarks saved or copy the correct url and paste it into the browser's url bar.
Maybe it's true, some control can happen because of the network. I didn't really pay attention to what the OP shared how he gave us the link and when I checked it was indeed accessible. It didn't take long for me to feel that the website I was visiting was still not very impressive, how it looked still simple.
Obviously bookmarking is important in order to minimize the manipulation of URLs that are almost pinned by senders who redirect us to third parties.