Zulu Alpha,
In 'normal' ICAO FPL land, you can file ZZZZ and then enter 'DEP/Funny Farm near Bonkerstown' as your departure airstrip without the Lat/Long. In Olympic FPL Land, the 'normal' FPL rules appear to go out of the window, hence making rejection of your FPL even more likely if you get it ever so slightly wrong.. I'm assuming that once this happens, you go to the back of the queue if there is such a limit to the number of aircraft allowed in the Restricted Zone at any one time?
If you call the AFPex helpdesk, they will reset your password.
Robin,
Lat/Long should be 11 characters such as: 5437N00134E
CAP 694 - UK Flight Planning Guide tells you exactly how to fill in a FPL