Line spacing and bullet points can sometimes be a bit tricky read on...
Short answer is to use SHIFT ENTER for a single line space.
Use a normal ENTER for a paragraph break or new bullet point.
Use the DEL or BACKSPACE key to rejoin broken lines.
Put a ENTER at the start or end of bullet point to insert or append more bullet points. Another ENTER on an empty line will close the bullet points and delete the last empty one.
If you want to have spacing between your bullet points, there are 2 ways.. Do it globally in the style sheet (ask us or a web designer how) or, do a SHIFT ENTER after your bullet point, then a single space. You need to do both if you want it to work on your live website.