You can join using two ways:
Find Profit Robots Bot in the list of contacts on our server a send any message to it.
It should reply to you and give you a key (NOTE: the key is missing on the screenshot, but you will have it). This is your personal key. All messages for that key will be forwarded by the bot into your private dialog with the bot.
You can type "S" to get all your keys (you can have more than one key) on the main menu. To back to the previous menu level type "C" (Cancel).
You can regenerate any key. In order to do that you need:
The bot will generate a new key.
To delete the key you need to follow the same steps but type "D" instead of "R". But only channel/group keys could be deleted.
You can send messages to Discord channels. Each channel will have its own secret key. Follow the next steps to get that key.
The bot will reply to you with a brief description, a link to add a bot and the list of available channels. You need to be an owner of the server in order to add a bot to the channel.
Select the server and push the "Authorize" button.
Type "R" to refresh the list. The bot will print the updated list.
And select the channel by typing its index
The bot will reply to you with a key.
Mention the bot on your server. The bot will detect that message and give you the key which you can use to post messages.
There are two types of channel keys: