Nav Link not showing in CMS but on live site mobile view

Hi,

I am looking to update this website https://www.theflowerhousenorwich.co.uk/ that was put together by a developer but have noticed there is an erroneous ‘web link’ button appearing in the burger menu on mobile view. When going to this on the CMS however, it is not appearing, just the already configured links which are correct.
Can anyone offer any explanation or assistance please? I have cleared cache etc. but it is still appearing. I have uploaded a screenshot to help.

Many thanks!

I have resolved this issue now. Thank you