[Resolved] Language Switcher is not working

I made a support ticket regarding this issue earlier, but having been away for a couple of weeks the ticket is now unfortunately closed to new replies. Here is the issue I am having problems with:

So far, I have translated the homepage of my website using the translation editor to one additional language: Swedish (I plan on adding two more languages). I have also added the language switcher to the primary menu and footer of my website. However, nothing happens when I click the desired language flag.

it does not work on the menu and it does not work on the footer.

Why does this happen & how can you help me?

Link to a page where the issue can be seen: hidden link

In the previous ticket (which was closed because I was away and inactive), I requested Forum Moderator (Named Otto) if he could be given access to my site and see that everything is installed properly. Otto agreed and I was asked to first do a back-up of my site (which I have now done) before he could log in and see what the issue is. This is where we left off.

I would love to Grant Access using the button below but have no idea what to include in the FTP details field or the Duplicator Package field. If I could do all this over the phone that would be extremely beneficial if that is possible.

I would like to continue with fixing this issue and would hope to resolve this asap 🙂

Thank you in advance for your help.

Edward