2-factor authentication helps to keep your account secure by only allowing you, the account owner, access to the account. Once you've secured your account with 2-factor authentication, your phone (or whatever other device you've chosen to use as your second factor of authentication) essentially becomes the key to your account. If you lose your phone or device, you will have lost the keys to your account and won't be able to access the account until we can prove that it's actually you, so it's extremely important to keep that device safe.
What do I do if I lose my 2FA device?
If you lose your device, someone steals it, leave it on a bus, your toddler jammed a PB&J in the charging port and it doesn't work anymore, or otherwise just don't have the device anymore, the process can be a bit complicated, but can be easily solved (think about losing your house keys; you can call a locksmith but you would need to prove that you are authorized to access the home before they'll make you a new key). Just contact us at firstname.lastname@example.org for assistance.