No one can enter this place without your permission.
There are millions of players at Minecraft servers.
Open DNS or Google Public DNS are both excellent and free public DNS services. Completely up and down like a roller coast and God forbid you post more than one thing a month or you'll be banned for over-activity.
Someone who creates a better alternative will get my money.
Here's my rant: Planet Minecraft needs to get their shit together and get some better servers.
If you are on a personal connection, like at home, you can run an anti-virus scan on your device to make sure it is not infected with malware.
There are thousands of items in Minecraft to create new things.
Main I had a similar problem to what you're describing (albeit probably for different reasons, as I'm running a linux setup on a Chromebook); what ended being a passable solution for me was to use Magic Launcher: It's basically a launcher made to allow for mods to easily be loaded but I basically used it to circumvent the fact that I was having a problem with the official launcher.
See if that works as a workaround until someone with a better solution can help out.
Service Status History We have tried pinging Planet Minecraft website using our server and the website returned the above results.
If is down for us too there is nothing you can do except waiting.