If you have a team licence, or purchased a licence key on AppSumo, then you have the ability to add and edit your host list. You as the license holder are the only one who can edit and change the emails in the list. The people with the email you put into the host list will be able to create and use a premium eyeson account for as long as you leave their email in the host list.
It is important that you NEVER DELETE YOUR OWN ACCOUNT EMAIL from the host list. If you accidentally deleted it, you won't be able to access the system anymore.
Here is what you can do if you accidentally deleted your email address:
Step 1: go to https://accounts.eyeson.team/licenses
Step 2: Click the button to show/edit licence
Step 3: add your account email as host entry