If you were placed in the jail category, it means you violated one of the server rules. Only the MDRG Discord moderation team can place someone there, and they always do it for a specific reason. If you want to understand what happened, you’ll need to look back at your actions on the server and think about anything you may have done that went against the rules.
I’m not part of the Discord moderation team, so I cannot review your case or help you get un-jailed. Whatever decision was made on the Discord side stays with them.
However, jail is usually a temporary restriction, typically lasting a few days. If someone does something more serious, they are banned instead, so jail is already the lighter form of punishment. You could have waited it out, but since you left the server, the process ended there.
Regarding the mod channels: Right now the moderators have restricted access because the latest update (v0.95) is available only for Patreon & SubscribeStar supporters. The mod channels for the version 0.95 will reopen for everyone once the public version is released.
If you want to share your full story, feel free to explain it here. This community on Itch.io is your second chance, and you’re welcome to participate as long as you follow the rules.