you need to send me a published link to see what errors are popping up in your developer console of your browser.
Now that you have included “fullpage” as a class ID of your parent container div. I also saw that you placed “section” as class ID for your section divs. That is incorrect.
The “section” needs to be entered as a class name not as a class ID.If “section” is not declared then the fullpage.js wont scroll your page.
Look at the example you followed from DigitalMast. Under the parent container, they have several sections and each section includes a class name of “section”.
Webflow Guide Custom Code: Webflow Interactions With fullPage JS - Go to Step 3 and see they mention including section as a class name, without you declaring section class name, it wont work.
Do you understand the difference between class name and class ID?