Hi! First of all thanks a lot for this tool!

I found an error than some metrics are empty: value sets to NaN and graph does not draw properly.
At screenshot good green part should take all the line, but it takes only 1/3

When you try to add www.walmart.com and www.walmart.ca for comparison, first domain gets added and when you add second one, it says 'data already exists on screen'

In Firefox (Windows 10) it looks like this:

I think this rule is missing in CSS (init.css, line 70): width: -moz-available;

.flex {
width: -webkit-fill-available;
width: -moz-available;
display: -webkit-box;
display: -ms-flexbox;
display: flex;
}

And with that change it looks good:

When fetching data for the domain 12gobiking.nl, it throws the following DOMException

Uncaught DOMException: Failed to execute 'querySelector' on 'Document': '#12gobiking' is not a valid selector.
at HTMLFormElement.

Need to improve the lighthouse Accessibility score

Looks like CRUX APIs have had a change an https://core-web-vitals.vercel.app/ now shows a new entry as 'undefined'

Can we check what this is and label it correctly?

Apparently happened after change in URL name from 'now' to 'vercel'.