Пожалуйста помогите разобраться в плагине E-commerce premium v2.0

This is not that simple - first you must check in css dimension ( if any) for this pictures. If dimensions not specified, then just upload bigger one( replace existed)
The No. of showed items ( if don't existed options to set that in some sort of control panel for that plugin) you can change in Controller which is used in that plugin. On your SS is showed 10 items, so this is may be changed in paginator option in Controller file. I dont have SE 3 and this plugin, but this is no big deal to change that.
Removing of desired block ( like on pic 2) is ismple - just erase or comment part of code for this block.

This forum is established to help users to LEARN something about SE and other things. Not for obligatory help. With no offense at all, but your question is pretty strange - you want to mess with php code and rest of similar shits, and you even don't know elementary things. Maybe is berdyev overdue with joking, but Generaly He is in rights. Many users want to be famous WebMasters with SocialScripts, and they known nothing about it. And worst, they WON'T learn even elementary thing. For those who won't learn anything, and want to have your own site - they pay to some others to do their "dirty" job.
Your question is trivial, since you on this forum pretty long time, and it's better for you (as webmaster) to learned something yet.
I think that is no need to be angry on berdyev , because of his joke....especially because He don't insult you, at all.