After clicking the hyperlink, proceed by inserting the above shown username and password in the log-in form.
We wish you a pleasant and successful time while getting to know TYPO3!
As we reestablish the original condition of typo3-testen.org every night, the system is locked every night approximately between 3:00 a.m. and 3:30 a.m. CET (GMT + 1.00).
As in the video, in your test web site the frontend editing is deactivated by default. You can activate it by clicking on the activation-switch in the so called admin panel (lower left corner), go to [Editing] and set checkmarks at:
Then click [Update].
If you want to deactivate Frontend Editing, just click again on the arrow on the right in the admin-panel to close it.
Note: In case your browser does not show the admin panel correctly, try using another browser like Firefox or Chrome.