Hello @Galiade!
Are you sure you typed the correct password or username? Or if the server were stable and didn't crashed? If so, try using vpn to get in, if that helps!
Hello @DrakuGamerxD!
If you didn't know, you need your Pokemon to have 150 happiness to use dig, you can type /happy 1-6 to check your Pokemon's happiness.
Hello @RedSorrow!
Yes, you can still get the salamencite. Once you have done the mega bracelette quest, he will also give you the salamancite along with the mega bracelette!
Hello @benrobot04!
What did it said when you tried to log into the test server? Have you tried restarting your router? Or you could also use VPN and try to login again.