Category Error and URL not found

[enjoytomove]

Goodmorning everyone,I would need your help.

For the first time I used AbanteCart for an e-commerce and how user friendly it seems,I have two problems that I cannot solve.

I have create a Categories with related sub-categories.

if I select the category,i receive a 404 Error (The requested URL was not found on this server.)
yet the products are listed both in the main category and in the sub-category.

Thanks a lot in advance.

(can I post my e-commerce link to show the error?)

[maxter]

Welcome to AbanteCart enjoytomove.

My guess, you have enabled SEO URLs and did not set up your webserver as instructed
https://abantecart.atlassian.net/wiki/spaces/AD/pages/7962664/SEO+URL+s

What is your webserver?

[enjoytomove]

thank you very much for helping Maxter.
it seems you solved my problem in seconds....
this part of the procedure had escaped me.

i've linux webser locate in Aruba Hosting

[maxter]

Glad I can help

[enjoytomove]

Update:

after making the suggested change, I now have two problems...

before, by clicking on a sold out product, you could still see the technical sheet.
Now, the page refreshes and takes you to the home page.

Second problem...

before editing, by clicking on the main category, compare all the products I had selected...
Now,if I select the main category...i just get a refresh 

[abantecart]

What edits do you refer to? Did you follow instructions correctly on setting up URL rewrite in your web server.  Are you using Apache or Nginx?
Post URLs to your site and page with the problem.