Thans for your insisting question.
It resulted in the answer I was looking for.

Hi Saeed

Your alternative templates leaves all dropdown menus open which although allows for linked parent items does leave the menu very long especially if you have a lot of child items. Regardless you can set the following in your templates ../templates/j51_enlighten/js/responsive-nav/responsive-nav.js to true which will leave the parent link text clickable (open dropdown by clicking the remainder of the button)...

allowParentLinks: true,

Ciarán

Thank you for your reply!
The option that you have provided in your reply did not sound very convincing!
I have memberships from other joomla theme clubs and this is not the problem with the themes that I purchase from them. Please visit my own company website [url]http://www.lunaritsolutions.com[/url] and click on any link from the main menu on any device, you will see that you will be redirected to its respective page without any problems. I have just checked another theme designed by you called 'Habitat' and it also has the same problem; so, I believe there is bug in the way you are coding the navigational system into your templates which needs to be fixed.
However, I would be open to take your suggestion if the child link did not show in the desktop version of the template and only showed up on the mobile views.
So, will you be able to offer a solution to this problem with your template?
Thank you!
Kind regards,
Saeed

Hi Saeed

For the mobile menu, parent items rely on the touch state to open it's dropdown of child items. Therefore issues will arise if the parent item is a link as touching this link opens the dropdown rather than following the link. Your best option would be to move the link on the parent item to a separate child item.

Ciarán

Thank you for your prompt reply!
Yes, please click on 'Contacts', or 'Our Team' links either while the desktop browser is very small as the size of a mobile phone or you test it on the actual mobile devices, the links will not redirect you to their designated pages.
Kind regards,
Saeed

Hello

We are unable to replicate any issues with the sub items of your menu. We have tested on iPhone, iPad (air), and android (S4) without any problems.

Is there any particular menu items you are having this issue with?

Ciarán