You can forget about them, we will do the cleaning once all of our users have migrated to the new infrastructure!
You should use the dedicated web interface to make any changes to your index.
The free DocSearch plan, doesn't include technical web support from the Support team. For further assistance, you can post your question on the Algolia Community Forum or Discord. For front-end issues, you can raise the issue directly on GitHub. In addition, you can review our DocSearch Documentation and FAQ.