I have exactly this same problem. I have tried Firefox, Chrome, and Edge, and also going incognito--but I still cannot bring up the login screen to enter my user name and pw. Everything else on the IHG site works: I can bring up the "Join" link. I can change the language. I can make a reservation (though not with my account). But I am absolutely not able to get to the login screen. I was on the phone for 30 minutes with IHG Ambassador. They don't know what may be causing the problem. Curiously when I experienced this same problem in May 2022, I was informed that because IHG was switching from Rewards Club to One Rewards, there might be some problems with the website. Then everything worked fine for several months--until now.