How long has it been since you submitted the application? If it's been less than 3-4 weeks since you applied, I would recommend just being patient for now: they receive a lot of applications, and going through all of them takes time.
If it's been over 4 weeks however, feel free to contact HR (try to reach out to a specific person rather than a general HR mailbox), and politely ask about the status of your application. You don't need to talk about bans or anything like that - just mention that you submitted an application on X date, have not received any information from them, and just wanted to check in on the status of your application. Best of luck!