Samsung S5 Active Not Connecting to wifi

[nonstoptanner]

I've been at a campground where I have internet access, the internet was working perfectly fine until they added a sign-in requirement to get on the wifi. My phone never was asked to sign in. I can't connect to the wifi. It won't say "Obtaining Ip Address" , it would say "Authentication Error Occured" or it simply would just wont connect, EVEN IF I SPAM IT. I've tried on my xbox, it sends me to the site and I check the terms and agreements and it connects, my families phones connects and works FINE. But mine won't