Could you please explain what this relates to. No idea what issue you have for anything.....

takumi.fujiwara said

I have changed of email. I tried to add an secondary email and firefox blocked due to "security reasons". I tried to delete my account and create another one and I could not do it due to "security reasons" Why is tihs happening?

Hi,

Would you please take a look at these articles and see if maybe they pertain to your problem :

https://support.mozilla.org/en-US/kb/accounts-blocked and : https://support.mozilla.org/en-US/kb/add-secondary-email-address-firefox-accounts

the problem was my VPN address, I an using NordVPN with a Canada server. once I changed to a US server everthing went fine

thanks

takumi.fujiwara said

the problem was my VPN address, I an using NordVPN with a Canada server. once I changed to a US server everthing went fine

Thank you for letting us know what solved the problem for you - might be helpful to others with the same problem  !