Google Indexing not working

Hello everyone,
We created a new landing page for our Google Ad campaign. The ads were not displayed after a few days due to “destination not working”.
I suspect it’s because Google can’t crawl the page.

Our main page is indexed and has been crawled, but can no longer be indexed manually: “Indexing problems with the URL were found during the live test”
The same thing happens with the new landing page (which this thread is about) Blue Phoenix Experience | Training.

If I want to submit the sitemap ( manually, I get an error message: “Sitemap could not be retrieved”

When testing for optimization for mobile devices, an error message also comes up: “Page cannot be reached”

I am clueless right now, as the site runs smoothly in all my browsers and devices.

The site is hosted via Strato and built with Webflow obviously.

I am grateful for every support and every tip!

Here is my site Read-Only: Webflow - Blue Phoenix Experience

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