Does Defender potentially cause indexing issues with Google?

Hi Gurus,

I’ve never used Defender before, so I thought I’d try it out.

I’m getting weird responses from various online tools that I normally have no problem with.

When I submit my website to https://www.google.com/webmasters/tools/mobile-friendly/?url=ecoevolver.com it says it can’t fetch the URL

When I submit to https://gtmetrix.com/ it also says it can’t access the site.

The google PageSpeed insights plugin can’t run reports on my site.

Has anyone every reported issues like this when using Defender? Thanks!