The first thing you need do is update your YouTube channel to inform your subscribers about your zaap page.
Add Your Zaap Page to Your About Section & Channel Banner
How to Add Zaap to your YouTube Banner Link and About Section Links
1. Go to YouTube Creator Studio
2. Navigate to Basic Info and Add your Zaap Link
Link Your Zaap Page in Your Video Descriptions
Include a link to your Zaap page in your video descriptions to direct your subscribers to your Zaap page.