Thanks for your fast reply. A few minutes ago I found your comment to another question to add this in the CSS: span.wpcf7-not-valid-tip { display: inline !important;}
I added it and now it works, but isn’t it already part of the latest contact form version?
Finally it works! I used another plugin which came with an internal google Maps API code and it is not possible to use two different API codes.
I tried it again with an empty API code field for the autocomplete plugin and no it works.