I’ve checked your site on my mobile in 2 different browsers and do not see the problem. Please try to clear browser cache and check one more time.
What device do you use?
Please make sure that your browser is not very old.
Also, try to check the sidebar on another device.
I am using an iPhone 7plus, Safari. I have cleared my cache but it is still not working to scroll. I have tried on several other iphones and it does not work to scroll in safari, which most people using an iphone use.
Hope you can help.