I tried to access my security proof and when i do it ask me to use a trusted PC. I can not use my trusted PC as it was stolen, so i clicked update security proof, after that stage it asked to send a code to an email i no longer have. it cant let me put a new email, it just tries to send the code to the old email address
 
but this stage does not allow me to enter a new emailed address. 

can you fix this for me or what is my next step.