Eonet Project Manager use a templating system as the most famous WordPress plugins. In the folder eonet-project-manager/componenet-project-manager/templates you will find all the templates used.
The templates has been designed as minimal as possible and as ready as possible to fit the theme integration but of course, they cannot fit any existing theme. This isn’t depending on us, but by the fact that every theme is developed in a different way so of course isn’t possible create a plugin that fits into the design of all existing themes. If you are not using a default WordPress theme or a theme developed by Alkaweb, then likely you will need to do something in order to fit the perfect integration with your theme.
The templates provide many hooks and filters which will help you in this job, but if this shouldn’t be enough, you can override the whole template from your theme or from your child theme, just cloning the file (with the same path) in yourtheme/eonet-project-manager/PATH-OF-THE-FILE/FILENAME.php
Of course, on occasion we will need to update template files, in order to improve it or add more features, so you (the theme developer) will need to copy the new files to your theme to maintain compatibility. We try to do this as little as possible, but it does happen.