Keep us updated. Casinos shouldn't take more than 2 weeks to process a simple verification, as long as you provide every document in the right format.
I keep saying this as I've been working in support for some time: a single verification usually takes a worker 10-20 minutes to verify. I'm talking at a situation where there's a number of pictures/scans, including a proof of residence, a document with a picture and a selfie. The only reason to delay that (if you're a legit company) is if you have a lot of requests and little staff, but it should never take more than a week.