After yesterday’s issue with the server, there have been a couple of changes:
Server backups are now back in place. Once every 3 hours there is a backup. They have been checked and they are working.
2. Forestry blocks
There is no way to change the existing errored blocks. The worldborder has however, been changed to 22,00 blocks wide (up from 16,000). You will be able to find new blocks outside of the old word border.