Troubleshooting

Bot shows offline in Discord, no error in console

Check your internet connection. If DNS lookups are failing on your machine, JDA cannot reach Discord's servers.
Confirm the bot token is correct. A wrong token throws an error at startup and disables the plugin, check your console log for that.

Confirm Message Content Intent is enabled in the Discord Developer Portal, under the Bot tab. Without it, the bot receives blank message content with no error.
Confirm the channel ID in config matches the channel you're actually typing in.

If you edited the config file inside your project's source folder (src/main/resources/config.yml), that is the template, not the live file. The server reads from its own deployed copy, usually under plugins/DiscordPulse/config.yml on a real server, or a similar path inside your test server folder if you're using Gradle's run-paper.
Editing the source template does nothing until you rebuild and the deployed file doesn't already exist. If the deployed file already exists, it will not be overwritten automatically.
Fix: either delete the deployed config and restart to regenerate it, or manually edit the deployed copy directly.

The bot needs the "Manage Messages" permission in that Discord channel. If it was invited without this permission, message deletion fails silently, no error shown.
Check the bot's role permissions in your Discord server settings.

This is a known incompatibility between older Shadow plugin versions and newer Gradle versions.
Fix: use com.gradleup.shadow version 8.3.5 or newer in build.gradle.kts, not the older com.github.johnrengelman.shadow.

This plugin is built and tested against Paper 1.21.11 specifically. Paper has since moved to a new versioning scheme (26.1.x and beyond). This plugin has not been tested past 1.21.11, expect possible breakage on newer versions.

Open an issue on the GitHub repo with your exact error message from console, not a paraphrase. Paraphrased errors hide the actual cause.