Unfortunately, the google map displays only the first 100 items and not the rest… Is there anybody who know why ? The number of item in webflow is limited?
Since you did not share your read-only link with us we are forced to guess. Mine is that that collection lists are limited to 100 items. If you need to do four hundred items you would need to use custom code to take four separate collection list calls and make one array which then could be used by the custom map code as the source of the pins. Finsweet created some tools that might be the right fit to handle the aggregation of multiple collections lists. Take a look at https://cmsdocs.webflow.io/