Error w/ Shortcode- Displaying other users' info

Hello,

I am trying to allow my users to be able to see/view their appointments they have made in the system. I am using the below shortcode:

[app_my_appointments allow_cancel="1"]

The error I am getting is that a user is seeing their appointments plus another users'.

Here is a screen shot of the current logged in users' display: Here

Here is a screen shot of the admin appointments+ dashboard display: Here

The User ID I am logged in with is 88, but I am getting the appointments for user ID's 88 and 134.

Please let me know what is going on here.

Thanks,
Judah