Cannot enter the Construct 3 editor

Seems like the same issue as here (from two years ago):

construct.net/en/forum/construct-3/general-discussion-7/cannot-enter-construct-editor-174661

Same issue today, can't enter the editor - stuck on the preparing screen, etc.

I'm pointing to the older topic because back then it was a server issue, and I wanted them to know perhaps where to look once again.

Well, perhaps not "server" but some issue on their end, not the user - that's all I meant.

Press F12 and look in the browser console - are there any error messages?

Try disabling any browser extensions you have installed, or try using a different browser. A common cause of people having weird issues loading Construct is buggy browser extensions that interfere with Construct and break it.