First of all as you are using a third party app, make sure that the installation and configuration done properly ? May be there will be some user groups or different places to create the patient and appointment ? Have a look at the module documentation and see, whether it is shown there, if yes, you can trace the location.
For further assistance on the same, either you can directly contact the module author or your in house developer.
Make sure any functionality or model is not override and installtion of this application done properly. If you need help then contact us.