How to get scrolldown and then click button

The first issue is that you can't use "THEN" on a hit level segment... THEN can only be used on Visit or Visitor scoped segments.

Since you are looking at a "within 1 week" clause, I would suggest changing your segment to Unique Visitor... 

But you should know that this will return ALL the visitor traffic for visitors that meet this criteria... if you need to look only at the last PVI Product Type, you will need to use a hit level segment with a visitor level container inside it...

So something like:

HIT scope segment
[

         PVI Product Type (v11) equals ****

         AND

         Visitor scope container

        [

                  Pages equals ****

                  THEN within 1 hit

                  Scroll (v46) exists

                  THEN within 1 week

                  PVI Product Type (v11) equals ****

        ]

]

Basically, this looks for ALL visitors who meet the page > scroll > product type criteria, AND only returns the hits for your Product Type

Not sure if the rest of the logic works, but you know your site better than I do.

Good Luck