App is not installed

Hi, we used monday oauth to get data via API, we did not pushed our app for review to marketplace, we dont need it in this case. We were using it on our localy host servers and it was working fine, user was installing our app via button, and then he was connecting, it still works pretty lit on local, but we deployed it to dev and nowe even after installing via button, we see “App is not installed, In order to use this app you need to first install it”. What we can do?

I suggest posting this in “monday Apps & Developers” where the monday developer community congregates.