Since one week now, the pictures on my anki flashcards are not showing up anymore.
I made sure the images and audios are synchronized automatically.
I even tried uninstalling and reinstalling Anki and the problem still persists.
What platform are you talking about? Do they not show up on every platform? Did they first show up, and then stopped? If yes, what have you done that might have caused it.
Okay, in that case you probably removed the Extra field from the Cloze template.
In AnkiDesktop, open a Cloze card in the editor, click “Cards…”, and look at the Back Template. The default should say this:
{{cloze:Text}}<br>
{{Back Extra}}
Make sure that yours has the {{Back Extra}} part on it.
if you edit the default templates, it has an effect across all other cards using the template, so the best is usually to make a new template based on the original and apply that then to specific deck cards.