Shortcode Addon: Post Type not Working

I just purchased the shortcode addon. It seems to be working, except I cannot change the post type.

This, the non-shortcode method, works:

Email Subject: page//Test 14

Body:

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque
vestibulum convallis nisl sit amet adipiscing. Ut eget eros quis ipsum
rhoncus imperdiet. Integer blandit at libero vel vehicula. Nam imperdiet
ut massa id pretium. Maecenas tempus ligula a iaculis aliquet. Curabitur
a nunc elit. Aenean at elit iaculis, lobortis nulla nec, facilisis
turpis. Etiam lacus nulla, bibendum sit amet blandit nec, tincidunt quis
nisi. Pellentesque eu nibh ut felis cursus sollicitudin.

This, however doesn’t work – it fails to post anything at all, and it doesn’t detect post type as page (when I checked the debug log):

Email Subject: Test 12

Body:

[ptype page]

Lorem ipsum dolor sit amet, consectetur adipiscing elit. Pellentesque
vestibulum convallis nisl sit amet adipiscing. Ut eget eros quis ipsum
rhoncus imperdiet. Integer blandit at libero vel vehicula. Nam imperdiet
ut massa id pretium. Maecenas tempus ligula a iaculis aliquet. Curabitur
a nunc elit. Aenean at elit iaculis, lobortis nulla nec, facilisis
turpis. Etiam lacus nulla, bibendum sit amet blandit nec, tincidunt quis
nisi. Pellentesque eu nibh ut felis cursus sollicitudin.

https://ww.wp.xz.cn/plugins/postie/