If your intention is to block the whole Internet and allow just a single website, there is a way to do it, but you will notice that blocking everything and allowing "just" what you want is not that simple.
You can do it, but you need to change your logic to match how the Internet actually works.
Block everything. You already knows how to do that with *. regex.
Note: the current regex ((\.|^)com$) won't block websites like "mercadolibre.cl").
Allow only the need domains (details below).
The debug log shows you tried to allow one domain using 2 regex rules, but there are issues:
the regex (\.|^)comunidadfeliz$ won't work as you expect.
This rule allows any domain ending with comunidadfeliz, but domains end with a top level domain (TLD), like .com, .br, .uk. This rule is not working.
The other rule, allows only the exact domain, but no subdomains.
Replace both regex rules with a single one:
(\.|^)comunidadfeliz.cl$ if you want just that TLD
or (\.|^)comunidadfeliz\. if you want to allow any TLD (this is probably a good idea).
Apparently you want to show one website only, with everything, including images, ads, etc.
Every website uses multiple domains to show the content, including the one you want to allow.
If you want to show images, videos, scripts, external advertising and other stuff, they are is served from different domains.
You need to allow many other domains. Look into the pages source code an search for every domain, then you need to allow all of them.