I am in highschool and my school uses a calendar website called my connect and Myplan which are completely usesless on ALL Samsung. It is just exclusive to Samsung. I tried going on the website but it would let me click on anything it was like it was frozen. I went to the website on my old phone an iPhone 6s and everything was fine.
@dungtran: Sorry to hear that you're having these issues. Which browser are you using to access the site? Have you tried using an alternate browser to see if this helps? I also recommend checking with the IT department at your school to enquire about the requirements for accessing the site.