Originally Posted by
allset2travel
Completed a RTW itinerary online. The online tool validated and priced it. When I clicked “Proceed to Booking”, it went into an endless loop. The twinkling circle kept on going to eternity! As I posted this message, 20 minutes had gone by! Grrrr!

Check your pop-up blocker and other security settings. As
pandaperth points out it should direct you to another website which you could inadvertently be blocking.