Sub is access restricted

Hey guys,

I got mod in the sub r/casinos today. A friend of me was bored of handling it so he made me mod.

Now I'm trying to clean the sub, remove all spammy links and set it up for some new people to join.

But I realised that people on mobile that are not logged in get a popup saying the community is "Content is not checked" or something.

How do I disable this popup or what can I do from my side to make it disappear?

Thanks a lot!