u/Flimsy-Pace6791

Hey, today i found my old ipad air which was the first release of ipad air which has no wifi i mean the wifi toggle was greyed out i searched for solutions but none of them worked i guess its with hardware likely wifi chip , i can't install apps on it and also most of the apps does not support , so i thought why not make it just a mini second screen with my laptop but can't find solution which deals with this no wifi solution
also i had one app for second screen (splashtop) installed but as i open it , it shows app not verified error need appstore for verification any solution for bypassing that might work
can anybody tell how can i make it a second screen ?