encretpixel As far as I know this is the correct way to link to different modules showing in one page.
Yes, the anchor links have been added in right manner as even outlined here and on replicating the relative issue, the same works fine in desktop mode however isnt working in responsive screen mode
For troubleshooting purposes, Have reviewed and tried the possible fix :
1) Added the relative script as mentioned here in file : /tpls/blocks/head.php
2) Could see Js error in console (web developer tool) as seen in screenshot in your site for which I have tried adding the JS script reference and the other member had mentioned the issue being relative to :
As indicated in a deleted answer and in the comments, this was a bug in Mobile jQuery
For troubleshooting, You may try the following steps :
1) Kindly try to clear your browser cache to see if the above added codes fixes the relative issue
2) Also, Does the issue still persists when assigning default joomla template ?