Cannot get it past opening screen – Slots Casino-slot machines Review

Not sure what’s up with this app - after reading all the positive reviews, I just downloaded this app to my iOS devices. When I opened it, the game remained on the opening screen with the logo and the progress bar stuck at 0%. The only thing on the screen that works is an icon which looks like a stack of chips which when tapped gives you 1-10 credits per each tap. However after tapping on it over 400 times to earn more than 500 credits, still nothing happened. The progress bar was still at 0%. And when I exited the app and returned a few minutes later, the credits were gone!!!! There is some very small text in the lower right corner which says “Development Build”. I wouldn’t expect to see that in a released version of an app. I have an iPhone X with the latest firmware - version 12.4 Would love some advice.
Review by Anaqah on Slots Casino-slot machines.