WP-CRM Issues

Hello,

I’m experiencing problems trying to translate WP-CRM from Usability Dynamics Developer.

The situation is that labels of contact form appears correctly translated. However in the backend of WP-CRM plugin labels appear with [:]

I’ve tried both formats:
<!–:en–>English Text<!–:–><!–:de–>Deutsch<!–:–>
And this is worse beacuse the contact page gets all messed up.

Is there a way to translate backend of WP-CRM plugin?
https://www.usabilitydynamics.com/product/wp-crm

https://ww.wp.xz.cn/plugins/qtranslate-x/