Due a problem with expired internal certificates pagekite is unable to connect to front-end server starting today. Read more about it here.
FreedomBox has a fix available that will reach you by the end of the week. No action will be needed on your part.
If you need the fix immediately, you can manually fix the problem by running the following commands:
$ echo "ca_certs = /etc/ssl/certs/ca-certificates.crt" | sudo tee /etc/pagekite.d/90_my_certs.rc $ sudo systemctl restart pagekite