Hi Megs! Good to hear from you. I have been having the same problem as well, every time I try to post a new look, it refuses and calls it SPAM. I have emailed Grace Hitchcock from Popsugar about it, as well as problems uploading images, and this is what I got from her: "We wanted to let you know that we are migrating all of your looks and favorites to our new POPSUGAR Social site. We understand this affected your ability to reach your Layouts (formerly Looks) and Favorites. We want to let you know that we are glad you shared you experience with us and we can assure you that your Layouts and Favorites have not been lost. We're working on various fixes to make the experience for Layouts and Favorites better so you can view them on your profile.
As far as adding image via the layout editor, that is something that we're working on adding back in. I talked to our team and they gave me a work around for you in the meantime. To add images to your layouts (formally referred to as "looks") you can click the "Create" button at the bottom of the screen and select "Upload." From the next screen you'll be able to upload images from your computer and add them to a "list" - our team suggested you create a list specifically for these images. Once you've saved that upload to a list, you'll see it under the "My Images" tab in the layout creator."
I think because they're still working on migrating our looks, we're still unable to post new looks. I'll try everyday and I'll let you know as soon as I'm able to post looks again. In the meantime I hope this helps. xo