An upgrade from ADSL to fibre will not be completed instantly. An engineer is required to complete external work and an activation date is dependant on engineer availability in the area. Upon an upgrade to fibre, a new router will be dispatched that is suitable for a fibre connection. Some older style routers aren't capable of supporting fibre.
I can see that you changed your account password online, and this was the reason as to why you experienced a loss in the broadband. This does occasionally happen and the authentication error was due to the credentials needing to be updated through the router settings. You now have an active connection.
Sorry for any inconvenience that has been caused.
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| Katie C|
Plusnet Help Team