@jg77merten,
Thank you for taking the time to leave a review. I am sorry to learn about the issue you have experienced with the plugin.
Did you open a support ticket before leaving a negative review? This is our support section https://pluginsarea.com/support/submit-a-ticket-on-easy-wp-members/
This kind of warning messages appears fro time to time and can be easy resolved. As you can imagine, there are thousands of different plugins, themes which means that the plugin might need a tweak for your custom theme.
We’re here to help you.
If you wish you could let us know where and when you see that message so we can help you and help the community as well.
We look forward to hearing from you.
Cheers