Not working: jquery conflict

Unfortunately not working on this website. Managed to get in working on an other WordPress website but this has a jquery conflict:

gdpr-public.js?ver=2.0.8:1 Uncaught TypeError: e(...).on is not a function
    at HTMLDocument.<anonymous> (gdpr-public.js?ver=2.0.8:1)
    at Object.resolveWith (jquery-1.6.4.min.js?ver=1.6.4:2)
    at Function.ready (jquery-1.6.4.min.js?ver=1.6.4:2)
    at HTMLDocument.C (jquery-1.6.4.min.js?ver=1.6.4:2)
(anonymous) @ gdpr-public.js?ver=2.0.8:1
resolveWith @ jquery-1.6.4.min.js?ver=1.6.4:2
ready @ jquery-1.6.4.min.js?ver=1.6.4:2
C @ jquery-1.6.4.min.js?ver=1.6.4:2

The page I need help with: [log in to see the link]