Custom templates not used despite copied from default-templates

Hi!

Im having issues with the default templates and custom templates.

I have copied the default templates to my theme folder (which is 100% custom) but they are not picked-up by the plugin. Fully vanilla files or customized by me to fit my theme, there is no difference.

I have deactivated the standard CSS (since I need to style it 100% my own way).

Anywhere I need to add some custom settings or similar to force the plugin to use the custom templates?