Availability of images on AWS

Is it normal not to have some images available on AWS S3?

I’m downloading a list of 104 images, but only 34 images were available for the day. These were the images of band 04, when I tried to download bands 08 no images were found.

I thought it was strange, I was hoping to find bands 08 too.

Are these problems normal?

No, this is not normal. It does happen occasionally that product is corrupt (as distributed from ESA), but this is an exception, not the rule.

You will have to be a bit more specific with your observations if you want us to take a deeper look.
Can you provide a list of files that you find are missing?