Why is the loupe missing in my Prestige Theme header online?

[Schwartz]

I'm using the Prestige Theme. There is something strange:

In the Shopify App I see the loupe in the header:

If I view my site on the internet, there is no loupe:

Any idea what is the problem?

Thank you

[BSS-Commerce]

Hi @Schwartz 
Can you kindly share your store link (with the password, if any) with us? We will check it and suggest you a solution if possible