The test run button for the "Basic HTML and HTML5: Say Hello to HTML Elements" course doesnt seem to be working

Hi @munatechlord, welcome to the forum.
What browser are you using?

Hi @simonebogni I am using Internet Explorer

Thanks for having me. This is my first attempt at learning to code @simonebogni

From what I understood, the tests have problems in Safari, Edge and Internet Explorer and the recommended browser to use is Chrome. Try to run it in Chrome and see if it passes.
Edit: also I think it work well with Firefox. I use also the developer edition of Firefox and I haven’t had a problem.
Edit 2: also the editor doesn’t work in mobile.