I have been running MFR v7.3.0 for several years, after an upgrade from MFR6.
Today between morning and afternoon it de-registered itself, and wouldn't re-activate. I re-acquired my Personal Code and License from the activation server, but those failed (see below). I uninstalled v7.3.0 and downloaded and installed v7.4.0 - but that too won't activate.
The symptom / cause is that MFR Reg box shows the wrong Personal Code and I can't change it!
I rely heavily on this tool and have elaborate presets designed. How can I clear the slate and get going again?