Selecta theme from Obox design

Hi – I’m new to www.remarpro.com but have used wp.com a long time. I’m using a video theme ‘Selecta’ https://www.obox-design.com/themes_page.cfm/theme/selecta

I’ve got three problems:

1) I want my categories to behave like archives (this was the case in wp.com but not on wp.org) – so when I select a category I see a page of icons for each post on one page – very neat.
2) Comments – I have not ticked box ‘commenter must provide email address’ but when I test it by leaving a comment an email address is asked for – very annoying
3) I want a full width post-format, can’t find it, again ok in wp.com version.

If any of you have experience with this theme or simply how to solve the issues, your advice would be really appreciated.

Have a great day.
Richard