Do you mean you are canceling or declining requests? I don't think you are negatively effected if the client cancels.. If you are cancelling within seven days of an upcoming stay or within 14 days of a holiday, your account may be suspended. Per the Rover terms:
3.4.1 By Sitters or Hosts. Pet Care Service Providers may incur the following penalties if they cancel a scheduled stay within seven or fewer days of the scheduled stay:
cancellations within seven or fewer days (i.e., canceling an appointment which is on the 10th on the 4th) will result in account review and possible suspension;
cancellations within two days of a stay will result in immediate account suspension;
two or more cancellations within a three month time span will result in account suspension;
cancellations within fourteen or fewer days of major holidays (federal holidays and bank holidays) will result in immediate account suspension.
Rover.com may effect or waive such suspensions in its sole discretion. Any suspension under this Section 3.4 may be appealed in writing to customer support. Rover.com may accept or reject such appeal in its sole discretion. Pet Care Service Providers will be exempt from suspension in the event of a cancellation described above if the Pet Owner reschedules the stay with another Pet Care Service Provider referred by the original Pet Care Service Provider. Pet Owners that have had stays cancelled may leave a rating for the canceling Pet Care Service Provider.