Steps:

• Create secure message with attempts limit of 1
• Send the link via messenger which generates link preview
• Open the link and the message will be unavailable anymore

After creating of a secret message you cannot select something in the textarea with link and password.

You can only select whole text by CMD (CTRL) + A.
Firefox: 74.0.1

https://youtu.be/cYqZhuPw-4A

Need to change "The link have copied!" to "The link has copied!".

Click to caesar logo should goes to /secure page currently it goes to /signin or /signup

Need to change "the link and password have copied" to "the link and the password have copied" in the tooltip after their creating.

There are no any messages in Settings -> Teams and Settings -> Lists.
There is no any idea what 'teams' setting means. Maybe you should add some description for this setting.

https://scr.4xxi.com/cu/Lists_2020-03-02_6_PM-23-50.png
https://scr.4xxi.com/cu/Teams_2020-03-02_6_PM-24-03.png

When you're signing up app shows 2fa secret key and QR code of it.
2fa secret is not selectable so it's quite a difficult to save it to desktop password manager, e.g. 1password

Increase space after "Text or image to encrypt and expire"

When you upload the .csv and select an anchor item to learn Caesar which column from .csv should be imported into an appropriate Caesars field, this initial item isnt imported.

In other words, if there are 8 items in .csv , only 7 will get into Caesar`s list.

add favicons using https://realfavicongenerator.net/ (for example)

Currently home page title = Home. It's not very informative :)