shop space white responsive

Hello,

I’m experiencing an issue with the mobile version of the website.

When I access the shop page:
https://hosting176356eu-cp7237.wordpresstemporal.com/tienda/

a large blank space appears at the top of the page, so I have to scroll down before I can see the actual website content.

Could you please help me identify and fix this issue?

In case it helps with troubleshooting, when the page initially loads, a sidebar briefly appears and then disappears immediately. I suspect this may be related to the blank space at the top of the page.

I look forward to your response.

Thank you very much in advance for your help.