After I upgraded the website from joomla 3 to joomla 4.2 and akeeba backup 9.2.7 (following all the instructions) front end backup does not work anymore.
Front end backup worked on the "old" Joomla3 site.
The backup that is triggered from front-end backup works when initiated manualy from the "One-click Backup" option..
When using curl (curl -L --max-redirs 10000 "https://ipheion.eu/index.php?option=com_akeeba&view=backup&key=[not included for securiy reasons]") to check with correct key,
I get a 404 message (Component not found).