Can't set location right

I am using the event manager and trying to set the locations but it is kinda buggy or something. I am using openstreet maps.

When I put the number and street part into the block it usually does not find the right location so I don’t pick one there but have to go on to add the city/zip and then I click on set address and it doesn’t and says something like can’t find location. (I think there is something with the browser addon that lets websites find your location but can’t be sure.)

sometimes I can add the location and click save and it saves it and then I can go back and click on set map location…sometimes it works…sometimes it doesn’t.

Any ideas? thanks
Julie