Hi there!
I have checked your page and there is a js error from one of your plugin that is causing the scrolling issue.
I'll right away debug it real quick and fix it with a proper solution, do not compromise the solution with low price bids if you want a proper one.
Best part i'm a full time freelancer so im available every time to help you whenever you need.
My skills set have advance technologies like, PHP, MySQL, Wordpress, Laravel, CI, HTML5, CSS3, JS, Jquery, Ajax, Tailwind, and Bootstrap.
I'll give you 2 weeks free support in regards of this project as your satisfaction is important.
so sending me a message here in chat and lets discuss further and start project, thank you for reading.