It appears that after migration, any reader with no existing access can create a Cumulus Wiki account. Unless I am wrong, one person has already created two accounts that appear to be SPAM, i.e. just for promoting their web sites!If you experience any issues relating to the migration then either start a topic in the "General" forum (preferred) ...
On the old host, there was at least an attempt to prevent SPAM, and there were many requests to create accounts that had to be blocked (or ignored). The new administrators of Wiki have to accept they need to watch what happens there.
An updated message is also needed in the pink area!