Question about pro version

Hi,
I just bought the pro version but have some issue’s:

• Non-admin people can not answer questions ( example here; https://garlicpressseller.com/ask/testy-3/ ). There is not option to login / sign up / answer question unless I am already logged in as the admin.
• I can’t find any documentation on where to find the widgets? I want to add the recent questions as a sidebar widget, but can’t find any option for this.
• I have read on the support forum you can remove the tag field by changing this in style.css:
  .dwqa-question-item .dwqa-question-meta {
  display: none;
  }

  Is there also an option to remove the category field?

  Thanks!