I'm trying to fix the website below and I changed the Permalinks from Default to Post-Name.
Now all the pages that have Treatments as a Parent in page attributes are not found when i visit their direct link.
However, when i set the Permalinks back to default they start working again.
Can someone please help me with what changes I need to make?
This is the treatment.php file if you need it:
Many thanks in advance! This is killing me... :(