Flex Bock 3, Flex Block 4 Title URL

Hello,
I installed the Default-Template for my homepage at http://www.allraps.com, so after I adjusted the filters and specifics for the two Flex Block 3 and Flex Block 4 elements, the URL that I set for the name of the element keeps on disappearing after I added it and saved it.
Any idea why the URL is not active and disappears?
Second question:
On the live preview of the template, there are Subcategories right next to the main category name on the Flex Blocks mentioned above, how can I add my subcategories’ names to the flex block 3 and 4?
Thanks in advance

Hi,
On the first image, there is the Template live preview. The Flex block Headline is “Don’t Miss” (1), the links does not working after I add it to the headline. With 2 I marked the other subcategories on “Don’t Miss” which look I want to place on my website
Here is how it looks on my website so is there any tutorial or can You please tell me how to add these right next to the main category name?

My next concern is how to fix my homepage on mobile devices to look like the template
Here is how I want to be:

and here is how it looks on my website:

P.S. I deactivated the mobile theme and now I see all my details from the desktop on mobile devices, sorry for the noobish question #2.

Now all I have to do is to manage the sub-categories for my main categories in the flex block grid and fix the links.
Thank you in advance!

Is there any tutorial on how to make my homepage flex to have the subcategories right next to the Name of the flex block? Example name: MUSIC, sub:SINGLE, ALBUM? I can’t make it look like the live preview on the template that I chose.

Thank you for your help, all is perfect now!