Not able to enter Play Mode

I’ve tried the Play Now link and loading a puzzle web page then clicking Play Now from there.

I just have a white background

Hi Bendbob, sorry for the issues. To help us troubleshoot would you be able to print the output of the browser developer console.

Press Ctrl+Shift+I
When it opens a window, at the top find the console tab and click on it.
Copy and paste the contents here

Also if you can provide what operating system and browser you were using, that might help us too.