Update Wizards 

t3oodle ships an update wizard, to make it easier to apply structural changes. Run it in Admin Tools > Upgrade > Upgrade Wizard or on CLI:

typo3 upgrade:run fgtclbT3oodleCTypeMigration
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Migrate plugin to content element 

Identifier: fgtclbT3oodleCTypeMigration

Up to t3oodle 2.x, the plugin has been registered as plugin (CType = list and list_type = t3oodle_main). Since t3oodle 3.0, it is registered as content element with CType = t3oodle_main, which is the way TYPO3 v13 wants plugins to be registered.

The update wizard migrates existing content elements and the permissions of backend users and groups.