New Google app install campaign error

I'm trying to setup new campaign for app installs.
Even though my headlines and description is basic, it gives ambigious error...
After checking for errors it says:
"Ad assets: (This ad can't be added to this ad group)"

When I press 'fix it' button it just takes me back to the Ad text page.









It's a brand new campaign, and brand new setup on the "New conversion action" was done before the new campaign.
I've setup the section for the firebase integration and that seems fine.

Any suggestions please?

Here's my conversion setup page, not sure if this is all good? It didnt give me any errors

Have you added images and video as it say ads POOR.

do you need images and video?

This might help watch this.
Sorry everythink keep changing we all go yt or udemy as it all updates so fast.

Hope that solves the problam somethink silly

It Google make us all dizzy from changes

The video seems to be good as it 2023

Yeah I had images but removed them to troubleshoot.

Thanks I will try the video. The error is just very non informative

I called Google, and they put me onto some weird guy that wanted to , I think, try and upsell me to a premium google ads account for premium support. It was a strange and obnoxious support call. I ended up hanging up, after failing to get given the ad engineer support info, which is apparently available somewhere, somehow.

I watched the video you posted, but its bit more focused on general google ads, and have watched other ones on the app installs but there's nothing about errors, and even the google results are pretty light on. Just say check your copy, but my copy is very vanilla.