It works now. Thank you. It looks like the 2nd blog profile will have to do, as the 1st one doesn't work with v3 or v2.8.
Also the 2nd blog profile has less features such as there being no tags or dedicated comments page, so it'll be harder for me to learn how to use processwire now, as I can't access those examples from the 1st blog profile.
If the 2 blog profiles are outdated, should I refer to the documentation page to learn how to create templates?