Citing the rules of Jul 06 2022 made by Dyno bot:
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Rule #0. - Use common sense, and don't attempt rule lawyering. The following rules are not comprehensive, do not attempt to find loopholes to violate the spirit of the rules or nitpick the wording of a rule in response to moderators if they ask you to stop doing something.
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Rule #1 - Be excellent to each other. Do not use sexist, racist, homophobic, transphobic and ableist insults, or otherwise discriminatory language.
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Rule #2 - NSFW is most obviously forbidden.
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Rule #3 - No excessive swearing. It's fully okay in moderation, if not aimed at people.
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Rule #4 - No spamming or flooding; Additionally, refrain from tagging users excessively.
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Rule #5 - No unwanted advertisement. Server invites are allowed only with context -- for example, if someone asks you for a link to a mod's server.
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Rule #6 - Speak English in all channels. Use something like Google Translate if needed.
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Rule #7 - Communicate in appropriate channels, so that the server remains nice and clean.
TLDR: Rules are: Mod decisions are final, no racism, no sexual text, no profanity, no spam, no ads, English only, keep it in appropriate channels.
After research I found this
tModLoader - Dig, Fight, and Build your way through the world of player-created mods on Terraria with tModLoader - this DLC makes modding Terraria a reality!tModLoader (TML) is an open-source, community-driven modification and expansion of the Terraria game that makes it possible to make and...
steamcommunity.com
Try to ask there, providing your discord name, why you were banned.
IMPORTANT: Don't try to use a 2nd account to bypass the ban, you will break Discord ToS by doing that, risking a suspension of your account.