If you fail to share your eufySecurity device with your families or guests, such as eufyCam, eufy doorbells, eufy floodlight, please make sure you have followed the correct instructions.  Here is the guidance: Share Your eufySecurity Devices with Your Family.

If you follow the above instructions but still fail to share your security devices, please consider the following: 

1. At eufy's current stage it's only possible to add up to five shared accounts. Only the main account with devices set up has the right to share devices. 

2. Please make sure the share account has been logged in to eufySecurity App.

3. Please make sure the main account (owner) has turned off the Two-factor authentication. Here are steps in eufySecurity App: Slide the three-lined button in the upper-left corner of the App' Device tab > Avatar > Two-factor Authentication

4. Please make sure the shared account is in the same login environment as your main account (owner). You can find the main account's login environment and adjust the login environment of the shared account by tapping the three-lined button in the upper-left corner of the App' Device tab and go to Settings > Region. As indicated in the picture. 

If the above instructions cannot solve your issue, please email us for further assistance.