I don't think there should be a number there AT ALL.
Can you tell me WHY you're saving the photos as jpeg? Remember that jpegs must always have purpose.
Well you definitely didn't use 12 that time. It looks more like 0 or 1.
Go back to your master file, and save the jpeg again. Make very sure it's 12. See how it looks.
Well, doesn't it just seem that the "box" which your website has allocated for a logo is too small? You need to ask the designer to make that box bigger.
Yeah, the "Automatic" setting is a dog. Make sure you change it.
Maybe it was this? https://www.facebook.com/groups/askdamien/posts/3170551753005003/
Much more detailed info in the Layers & Masks Class of course.