Custom 4:3 Resolution

I am trying to change my timeline resolution to somewhat 4k 4:3, but somehow it does not change to a decent resolution. 3840:2880 for example is not possible, because for some reason 2880 exceeds the dimensions. I just can't type it in. Any thoughts on this?

BR
S

[Peter Chamberlain]

R u using the free version?
Res is limited to UHD

ARGH! You were right. I accidentally downloaded the wrong file
Thanks for the hint.

With the free version you cannot use a timeline above 3840x2160.

3840*2880 works perfectly in Studio. So the solution is to spend the 295 USD for studio

Thanks y'all. Yes, I accidentally downloaded the free version and thought it might have been an issue with the beta. But of course in the studio version it works.

Merci!