I’m not sure why, but for some reason the sticky pop-up box that is accessed via the + button in the top right of the screen, positions perfectly on every page except for blog posts pages (happens on every post – but not the main blog page accessed from the main nav). I have no idea why this is.
Thank you for getting back to me. It happens on my phone and on Nikki’s in Chrome and Firefox browsers on both. I think I see what the problem is – it looks like the featured image on each blog post is pushing the contents of the screen past the borders of the phone screen. I thought the featured image would auto-size, but it appears not to be.