I am building a simple component in aem 6.3 and there is a parsys inside the component itself, but neither am I able to edit the component nor am I able to delete it.
Do you have a dialog or atleast an edit config for your component ? A component can be editable only if it has a dialog or to the minimum an edit config node (cq:editConfig). If your answer for this question is no , try adding an edit config node with below configurations
How you have included the container component which is containing the parsys component in the page?
Have you drag and drop it OR keeps it static in page component?
Please check the below article:
you will see how parsys is included in text-image component for drag and drop of heading and text OR button component to complete a text image component.
Do you have a dialog or atleast an edit config for your component ? A component can be editable only if it has a dialog or to the minimum an edit config node (cq:editConfig). If your answer for this question is no , try adding an edit config node with below configurations