Hello Annushka,

Sorry for being late for reply, I hope you accept my apology 🙂

I’m not sure what can cause this issue, but I think that there’s a conflict with theme you’re using.
I will need to check this deeper, but I will need an admin access credentials for your WordPress site, if you don’t mind, you can send them by submitting a ticket on our Support Ticket System to provide 100% security for your site sensitive data 🙂

Ticket System: Leap13