The balloon that appears when map icon is clicked - during the create/edit phase - is incredibly sma

Hi guys, the balloon is so small when I try to edit the title and content of balloon, that the scroll bars don't show properly and I can't see the text to edit it.

It would also be good if the balloon was a bigger (wider) when viewed in the website.

You may notice from the screenshot that the list of locations below the map actually runs off the bottom of the page, and there is no way to 'scroll down' to access the lower ones (and I can't move the window higher on the screen either).

Browser is Chrome. PC is HP Laptop with 15.4inch monitor.

Thanks in advance for your help!