XDM error on Kali linux 2021.1

[kalilinuxviet (kalilinuxviet@gmail.com)]

Hi!
XDM add-on on kali linux 2021.1 error “This add-on is not actively monitored for security by Mozilla. Make sure you trust it before installing.” please help me for this issues.
Thanks alot!

[jscher2000]

Nearly all extensions have that message next to the install button, except for those accepted into the Recommended program.

• https://support.mozilla.org/kb/recommended-extensions-program
• https://support.mozilla.org/kb/tips-assessing-safety-extension