You need to close the « gMap » shortcode if you’ll use maps with one marker before maps with multiple markers.
[wt_gMap latitude="51.515126" longitude="-0.11124" zoom="12" styling="true" saturation="-60" lightness="10" customMarkers="true" customNavigation="false"]
[marker latitude="51.516474" longitude="-0.133899" text="Here is our main office."]
[/wt_gMap]
[wt_gMap latitude="51.515126" longitude="-0.11124" zoom="12" styling="true" saturation="-60" lightness="10" customMarkers="true" customNavigation="false"]
[marker latitude="51.516474" longitude="-0.133899" text="Here is our main office."]
[marker latitude="51.505951" longitude="-0.100898" text="Here is our second office."]
[marker latitude="51.510772" longitude="-0.134161" text="You can display up to 10 map locations!"]
[/wt_gMap]
[wt_gMap latitude="51.478134" longitude="0.000000" maptype="TERRAIN"]
[wt_gMap latitude="51.478134" longitude="0.000000" marker="false" controls="false" scrollwheel="false"]
[wt_gMap latitude="51.478134" longitude="0.000000" controls="true"]
Fusce vulputate dignissim risus id cursus. In eu eleifend leo. Curabitur non purus lorem, sed rutrum lectus.
Donec sed placerat ipsum. Suspendisse nec augue ut arcu elementum iaculis. Nulla est felis, interdum sed viverra sed, faucibus et arcu. Quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi.
[wt_gMap width="400" height="250" latitude="51.478134" longitude="0.000000" popup="true" align="left"]
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Donec sed placerat ipsum. Suspendisse nec augue ut arcu elementum iaculis. Nulla est felis, interdum sed viverra sed, faucibus et arcu. Quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi.
[wt_gMap width="400" height="250" latitude="51.478134" longitude="0.000000" popup="true" align="right"]