Hello,
I apologize for the issue you are facing with Google indexing on your website http://www.soleil-marketing.de. It seems like you have been experiencing the 429 error code consistently despite trying various troubleshooting steps.
Since you have already tried the tips from the help section, including turning off instant indexing, changing the API key, and clearing the browser cache without success, there might be other factors causing the issue.
Given the persistent nature of the problem, I recommend reaching out to our dedicated support team by clicking here to further investigate and assist you in resolving the Google indexing issue with the error code 429.
Thank you for your understanding, and we are here to help you further with this matter.
Sources:
How to Fix 429 Error with IndexNow API » Rank Math
Discovered – Currently Not Indexed in Google Search Console » Rank Math
How to Fix "Crawled – Currently Not Indexed" Error in Google Search Console » Rank Math
Hello,
Thank you for contacting us and sorry for any inconvenience that might have been caused due to that.
We checked your website but couldn’t find any issue that may prevent this from being indexed on Google.

In this case, please test your homepage URL in the URL Inspection Tool and share the screenshots of the result with us so that we can check the issue further for you: https://support.google.com/webmasters/answer/9012289?hl=en
You can use any image-sharing tool like https://imgur.com/upload to share the screenshot with us.
Regarding the instant indexing issue, when you see a 429 error it means that the IP address of your website is sending too many requests to the API.
Also, that error suggests that you are exhausting the quota limit for the number of publishing requests per day.
If you have other websites on the same server or are on shared hosting, There’s a possibility that other websites may be using up the quota.
We suggest you install the following plugin from Bing on your website and try submitting some URLs to understand if the issue is only from the IndexNow API implementation: https://wordpress.org/plugins/indexnow/
However, please note that the Instant Indexing feature included with the Rank Math plugin is only for Bing & Yandex. But if you want to use the instant indexing for Google then you’ll have to use our additional Instant Indexing for Google plugin.
For more details on Instant Indexing for Google, you can check this guideline: https://rankmath.com/blog/google-indexing-api/
Let us know how it goes. Looking forward to helping you.
Thank you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.