Hi there,
Actually, those apps are developed by TechJoomla ->
https://techjoomla.com/products/invitex . By the way, it seems that you are using older version and it might not compatible with latest Easysocial, maybe you can try to update to it latest and see how it goes.
If problem persisted, it would be best if you can consult them regarding this and see how it goes. Thanks for your understanding.