I used the simulator to test my app.
Then you did not test your app. The simulator is useful but it is nowhere near an adequate substitute for device testing. What if users report that the app crashes on their devices, but you can't reproduce the crash in the simulator? This is not a hypothetical scenario, it's actually quite common.
I want to know if there is any way I can still have the app published without buying any other ios device?
Possibly, but it would be extremely unwise to publish the app without testing it on a device. If you can't get a device, try to borrow one.