Hi vrs19 ! If you deactivate and then reactivate Buttonizer, you won't lose your buttons, they're saved in your database 🙂
We're currently working on a export-import functionality which will become available soon.
For now you can temporarely use the following knowledge base article to export your buttons: https://community.buttonizer.pro/knowledgebase/382-export-buttonizer-data
Let me know if this helps 🙂