[Plugin: Basic Google Maps Placemarks] plugin error – bad displays a map

I have a problem with this plugin

I installed and added a few markers
set the options, zoom, width, height, etc.
I added a page with a map [bgmp-map]

map is shifted to the southwest
for example, is to be 50,2748 19,1327
and is 50,0000 19,0000
script resets the values ​​to integers

markers – photosplugin error – bad displays a map
are arranged on one another

please help
thank you

http://ww.wp.xz.cn/extend/plugins/basic-google-maps-placemarks/