I think there are some issues with the apply model – Kiet's working on a solution for it.
In the meantime, can you try asking Onlook again? I know it's inconveniant.
If nothing loads on the page, try clicking the text on the page, then prompting from the chat asking it to create a part or section of the website or thing you've prompted. Sometimes there's just a ton of code that gets rendered and doesn't apply, so shortening the length of the output manually with a smaller prompt may help.
Something we definitely need to fix though