request for additional security

Zoom security processes may require authentication that you are the account owner. If you cannot access your email, you should enable 2FA (two factor authentication) according to this Zoom Support article:

https://support.zoom.us/hc/en-us/articles/360038247071-Managing-two-factor-authentication-2FA- 

If you are sharing an account with someone else and do not have access to the email address  or 2FA mechanism of the Zoom account, it’s a violation of the Zoom Terms of Service (TOS).

https://explore.zoom.us/en/terms/ 

If the meeting was set up by someone else, but they are unable to host the meeting AND they want you to host the meeting for them, using the Host Key is a workaround that Zoom provides:

https://support.zoom.us/hc/en-us/articles/205172555-Using-your-host-key 

Note that the Meeting need to be set without Waiting Room and with Join Before Host for this to work.