Current: Website runs on localhost:3000 Website runs on .vercel.app Receive ERR_SSL_PROTOCOL_ERROR when accessing website through custom domain on any device

Expected: Website should run on custom domain without any SSL errors on any device

I followed this tutorial exactly step by step to add the A and CNAME records for my purchased domain: https://www.youtube.com/watch?v=ZnZG7_W6yGE

Don't know if this helps, but 2 of the checkers on this website claim my domain has malware: https://www.urlvoid.com/ , The .vercel.app domain has no problems.

I would prefer to not share the domain of my website, but this is a breakdown of the website that might be of help:

• website displays images that are stored locally in my GitHub repo
• I am using \ instead of next/image
• Only user interaction is clicking on buttons to navigate between subpages and one input field that adds a query param to the URL
• There are no redirects to outside of the domain