Try to update the plugin (you have an older version).
Use shortcode. For example: [rmc]
Check https://ww.wp.xz.cn/plugins/responsive-mortgage-calculator/ for more examples.
Try to just write [mlcalc mterm=”25″ size=”wide” calculator=”mortgage_only” currency=”gbp”] in the content of the page. Don’t use “<?php echo…”.
The plugin is opened now.
Thanks for the report.
This issue has been fixed. Please update to the latest version (1.5.2).