Restore factory settings

Hello all . First post with you - thank you in advance for any help you can offer.

I have no idea why or how but my Corel x5 has come up with a message box saying I have a pirate copy and they have frozen certain functions within Corel itself.    My copy is legit.   I have face booked Corel Learning who emailed me instructions on sorting it.    Renaming the file with ' old ' at the end .  Empting the recycle bin.  restarting  and holding down F8 when I launch Corel.  This is not working .  I am still getting the message to say its counterfeit and when it opens still has the frozen functions.   I am not getting the option to reset factory settings.   

I only bought this directly from Corel 2 years ago and they have today told me that it is no longer supported and can help no further.

I really would appreciate any help or advice .   Thank you so much    sal