Don't share your access code with others.
Once logged into your video or album, you will see a 'Share' button on the top right. Click/Tap the button and it will open the Share sidebar. You can simply enter the name and email address of the person you want to share your album with and click 'Invite'.
NOTE: Anyone you invite to access your album cannot invite others to your album or download your videos.
Next, the invited person will receive an email including a link to view your album and their own unique access code. They can click on the link and login using their access code.
Note: If they haven't received the email, please tell them to check their spam/junk folder.