I have checked from my localhost and was able to successfully view Future tasks in “My Schedules” section of the calendar. Since I am unable to reproduce the issue you are facing, please create a support ticket through this link and provide me a temporary admin credentials with me so that I can look into your issue: https://wperp.com/contact/
Currently, it’s not possible to integrate the activities of Deals add-on in the activities of CRM add-on. Regarding being able to add new activity through CRM “Activities” option, I have noted down your suggestion. I really appreciate it.