What you'll need

1. A Repl account.
   Sign up at: https://replit.com/signup

2. An UptimeRobot account.
   Sign up at: https://uptimerobot.com/signUp

3. A Minecraft server you owned.
   Make sure your server settings online-mode set to false!

1. Go to Repl It.
2. Click + in the top right and click Import from GitHub at the close button.
3. Put https://github.com/JadeMin/aternos-afkbot.git into GitHub URL and click Create Repl!
4. Click Secrets in the left Tools section.
5. Put PASSWORD into key and put any password you want into value and click Add new secret.
6. Click Run at the top and wait for it done.
7. If everything ok, you will see Webview tab on the Repl then copy the url.
8. Go to the url copied in Step 8 and click login at the top menu
9. Enter the password you've put in Step 6 and go to dashboard home then click Join Bot.
10. Now the bot will be connected your server (config.json).
11. Go to UptimeRobot.
12. Click Add New Monitor and select Monitor Type to HTTP(s).
13. Paste the url copied in Step 8 into URL (or IP).
14. Click Create Monitor 2 times.
15. Finally... DONE! Enjoy your free 24/7 Aternos server.

By doing this, you acknowledge that you are responsible for any problems arise.
I DO NOT RECOMMEND DOING THIS ON YOUR MAIN ATERNOS SERVER!