storefront menu on mobile

Change defer JS setting from delayed to deferred, purge cache and try again.

It looks that it works now…..

Today and tomorrow I will check it on several mobiles.

Do you have any security plugin installed? The Guestmode doesn’t work at your page, because access to guest.vary.php is blocked!

I’ve installed iThemes Security (https://www.ads-software.com/plugins/better-wp-security/)

You should exclude guest.vary.php to get Guestmode work.

I found a solution : https://www.ads-software.com/support/topic/problem-with-lscwp-plugin/

I hope this will work.

Not really a good solution if there is no setting to exclude certain script.

It is working.

Did you disable Guestmode?

No, the problem was caused by iThemes Security.
I followed the solution given here: https://www.ads-software.com/support/topic/problem-with-lscwp-plugin/.