I got my Yorkie three weeks ago, she's 3 months now and I've potty trained her within 3 days! Yeah I'm really lucky!!! I'm with her all day and I made sure she knew who was boss by using the treat or no treat method. But when my friend came to stay at my place for a week, she started missing left and right and didn't even care where she peed.
So it looks like in your case, your lil' ones are just too excited. There's someone to play with now so they're distracted. The best way is to just keep them in the Kitchen for now and if they want to be in the living room with you guys, make sure you also have a pad there. Sometimes they prefer pads in two areas. Maybe that will do the trick. Let us know.
