Can't install any cloudflare app in my website eg. PACE

Hi I m trying to install PACE into my domain, but it ends up with error An error occurred while trying to install the app: New app installs are not allowed.

Also when accessing app dashboard " Cloudflare Apps are deprecated and will be sunset in the near future. We will be creating a new Apps experience. If you’re interested, leave us feedback and sign up" this error comes up. Any work around ?
app error

Sorry, no. That message makes it pretty clear you can’t install any new apps.

Any other way to install app in your website?

I suppose you could code it into your site: