it is an old phone, but still in use. I have unfortunately lost the security code. How to recover it. It is backed up, hus no problem wiping it clean.
Sorry for my reply. I'm also only F-Secure user (their home solutions). And only as unofficial feelings.
Just as addition to previous reply:
their (F-Secure) official statement is "Mobile Security for Symbian has reached its end of life" (some years how):
But maybe ?! Support indeed able to help/advice something with your certain situation (if not -> maybe possible to find some not-designed workarounds on web).
Symbian is not a supported OS and Mobile Security for Symbian has reached its end of life as mentioned in the previous replies by @Ukko and @Näsäviisas.
Support might also mention that it is not a supported OS and I'm afraid if they can provide any help further since it is unsupported.