Thank you for your reply,
I’m using local host on my computer that’s why I can not provide any URL link.
I also read the same topic here:
https://www.8theme.com/topic/cannot-edit-connection-block-in-header-builders-mobile-menu/#post-231214
But not get the solution. maybe solution provided in private message, so I guess you definitely have the solution for this problem.
Please suggest me ASAP