Been running Rosetta since 2006 with the same account. Wanted to access the web settings and had to log in but the email address is no longer recognised ? Recreated my account but it is, of course, a new user. Haven't been getting any work for a week or 2 but never had this problem before. Has something changed?

Lack of work is normal because the standard Rosetta 4.2 work is basically non-existent these days.
However, there are other tasks available. They are the Rosetta Python tasks and require VirtualBox to be installed and Hardware Virtualization enabled (in the BIOS).
These tasks have their share of issues.

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