i choose london but when i check ip i see a united states

If you chose LON1 on the droplet creation screen your droplet will be created in the London data center. We are often adding new IP ranges as we continue to grow. geoip information is derived from centralized databases that require updates and when new IP ranges are brought on you may see incorrect geoip information for a while until those records are updated.

i must copy my ip and click to website to configure i see error like this instalation failed Please check /var/log/cloud-init-output.log for more details

You haven't mentioned which OS or one-click image you are trying to deploy so it is difficult to know what issue you're encountering. cloud-init is the system that runs when your droplet is first launched and is used more extensively in our one-click images. I would recommend going to the control panel and clicking Destroy->Rebuild and selecting the same one-click image to re-do the deployment.

my first droplet i choose wrong ubuntu (64) should be 32 and i have IPv4 but in the website when i configure i can only choose IPv6 so when i check ip i have US not UK so i wrong configurated , i delete this droplet and i creat new with ubuntu 32 and like before i write i have this errror / so you suggest a destroyed this droplet and a create new?