Go to the "Your Houzz" in the upper right hand corner of the page. Click on "Your Houzz" so that it takes you to your Profile Page. In the middle of the page, do you see the word "Bookmarks". Check there and see if you find your clippings there.

Someone on another forum mentioned finding their old clippings under Bookmarks in this manner, so I tried it even though I didn't think I had any clippings. Apparently, over the last 10 years I have clipped 3 things and all of them are there in the Discussions section under Bookmarks. So, it worked for me.