In Ipad 1, Screen freeze and do not respond after around 10 seconds

We just bought Minecraft yesterday in the Apple Store.

When we opened in the first times, after clicking the screen friezed in the "Mojang screen".

We saw in the forums that we could change the idiom of the iPad to US-English and it will work.
We changed and after the "Mojang screen" entered in the Minecraft but the screen freezes and do not response after around 10 seconds.

We are waiting, please, your answer.

Thanks in advance,

Rogerio