update h2 (If you use h2 to save the history, please convert the database to txt or mysql and delete the h2 database after converting, then update the plugin and convert txt or mysql back to h2)
Important: If you are upgrading from version 2.x.x, please delete BungeePoll.jar from your plugins folder and make a backup. The BungeePoll folder is automatically renamed, if that doesn't work, please rename the BungeePoll folder manually to BungeeSurvey. Since a lot has been renamed in this update, you have to set all configs / languages again.
Fix language reset bug,
repair version check
and polls not saving bug
When you update from version below 2.0.0, make a backup of the BungeePoll folder and the corresponding database before updating!