I fixed it up for you, and I took photos of what you did vs what I did. Take a look here:
https://postimg.cc/gallery/M1GK2Tq
I promise it’s not your device! This is a site quirk unfortunately, you’ll get the hang of it.
In the photos I did, all I did was make sure there was one single space between the [1]: and the link, and then you only do one enter/new line between each of them. In yours, you can see there was multiple lines a part, and just double check that there’s 1 space between the [1]: and the link. Like
[1]: linkhere
[2]: linkhere
[3]: linkhere