The easiest way is to join the support server and ask for help. The bot devs are there a few hours every day, and always ready to help you.
You can contact the ManageBot support by mailing support@managebot.xyz. It will take a few hours or days until you get a response, spamming will result in being ignored.
Not mentioned in the features, but still here: the integrated support system. You can directly message the main developer of ManageBot by using the integrated support system. To start, you can use /support chat info
and learn how to use the support system.
If you didn't find what you looked for, you may find these links helpful. If you still need help, please join our Discord server.