You copied from docs to execute cron.php, but in your crontab you still have index.php. what is purpose of that?
My mistake, this is the cronjob:
0 * * * * /opt/alt/php73/usr/bin/php /home/u43825p39641/domains/marktplaats24.nl/public_html/oc-includes/osclass/cron.php -p cron -t hourly
0 0 * * * /opt/alt/php73/usr/bin/php /home/u43825p39641/domains/marktplaats24.nl/public_html/oc-includes/osclass/cron.php -p cron -t daily
0 0 * * 0 /opt/alt/php73/usr/bin/php /home/u43825p39641/domains/marktplaats24.nl/public_html/oc-includes/osclass/cron.php -p cron -t weekly
Now i get this message from the cron job:
ABS_PATH is not loaded. Direct access is not allowed.
Now i am lost.