I don't have it but all of my photos were good quality without blur or anything that can decrease quality of my photos
There are some reasons why KYC can fail,
- bad quality images/photos
- the size is too big or too small (some platforms are allowed to use PDF to solve this size issue)
- the documents are out of date
- the information such as names, date of birth in the platform and the document do not match
- suspected of using other people's documents or fake documents
- etc
If you feel that the documents you have provided are valid, then you don't need to panic and be patient in waiting for an answer from the support.
Because support usually doesn't have the authority to check KYC, so they won't be able to answer your questions until they get an update from someone who checks your documents.
Those are not the only reasons why KYC can fail. You can fulfil every criteria that you wrote and still fail because the casino staff isn't competent in KYC policy. For example, every casino asks their users about the bill documents. I personally can't provide billing documents because in my country such a thing doesn't exist. We don't receive bills documents, we pay bills online via a special bill code and also when we rent houses, we don't do it officially and it's okay in our country. When I live in a rent, how can I provide any kind of proof that I live here? That's impossible in my country and it's also hard to explain to a casino representative who lives in the centre of Dublin.