Все работает.

Обновил версию. Работает. К каждому образцу приложено работающая карта.
Не забудьте удалить знак восклицания (!) из примера.
Не забывайте, что каждый элемент между символами [ и ] должен быть в одну строку. При копировании примеров необходимо удалять перевод строки.

Для yamap_geo если не работает
https://самопревосхождение.рф/images/raduga.kml
указывайте
https://XN–80AEGCCAES4APFCAKPLI6E.XN–P1AI/images/raduga.kml

Чтобы получить координаты места используйте примеры, в которых включен showcoords=’true’

Внимание! Плагин отключает фильтр wptexturize вот так:
remove_filter(‘the_content’,’wptexturize’);

Далее проверенные примеры

[yandexMap description='Map with route builder' center='55.657793,37.249445' type='map' zoomcontrol='true' typeselector='true' scaleline='true' search='true' geolocation='true' fullscreen='true' traffic='true' showcoords='true' zoom_inital=13 zoom_min=5 zoom_max=16 width='550' height='400']
[yamap_label coord='55.657793,37.249445' description='Label description' routeonclick='true' icon='https://самопревосхождение.рф/images/1-tower.ico' iconsize='16,16' iconoffset='-8,-8']
[/yandexMap]

[yandexMap center='55.8180555,37.6138888' zoom_inital=8 zoom_min=5]
[yamap_label coord='55.8180555,37.6138888' description='Ostankino Digital TV broadcaster with service area' icon='https://самопревосхождение.рф/images/3-tower.ico' iconsize='16,16' iconoffset='-8,-8']
[yamap_fill area='(55.033092,36.15718),(56.54615,39.05099)' description='fill' img='https://самопревосхождение.рф/images/msk.png' opacity=0.7]
[/yandexMap]

[yandexMap description='Load KML' center='55.669,37.44' zoom_inital=2 height='450' minimap='false']
[yamap_geo url='https://XN--80AEGCCAES4APFCAKPLI6E.XN--P1AI/images/raduga.kml']
[yamap_geo url='https://XN--80AEGCCAES4APFCAKPLI6E.XN--P1AI/images/tricolor.kml']
[/yandexMap]

[yandexMap center='55.708111,37.619044' zoom_inital=10]
[yamap_obect type='point' description='1. Point example' coord='55.674756,37.772853']
[yamap_obect type='line' description='2. Line example 1' coord='(55.874461,37.683589),(55.836612,37.743327)' width='10']
[yamap_obect type='line' description='3. Line example 2' width='7' color='#FF00FF' color_opacity='0.5' coord='(55.900317,37.520167),(55.86674,37.522914),(55.862879,37.575786),(55.896459,37.598445)']
[yamap_obect type='circle' description='4. Circle Example' coord='(55.665442,37.585399)' width='7' color='#FF00FF' color_opacity='0.5' fill='#00FF00' fill_opacity='0.3' border_radius='5' radius='5000']
[yamap_obect type='rectangle' description='5. Rectangle example' coord='(55.70,37.30),(55.80,37.40)']
[yamap_obect type='polygon' description='6. Polygon example' width='7' color='#FF00FF' color_opacity='0.5' fill='#00FF00' fill_opacity='0.3' border_radius='5' coord='((55.75, 37.50),(55.75, 37.71),(55.70, 37.70))']
[yamap_obect type='polygon' description='7. Complex polygon example' width='3' color='#FF00FF' color_opacity='0.7' fill='#00FF00' fill_opacity='0.7' border_radius='4' coord='((55.55, 37.40),(55.55, 37.61),(55.50, 37.60)),((55.53, 37.48),(55.52, 37.60),(55.50, 37.60))']
[/yandexMap]

[yandexMap center='55.657793,37.249445' zoom_inital=12 zoom_min=5 height='300' description='(lt)b(gt)WordPress(lt)/b(gt) started in 2003 (lt)img src(equiv)(quot)https://самопревосхождение.рф/images/1-tower.ico(quot)(gt) with a single bit of code to enhance the typography of everyday writing and with fewer users than you can count on your fingers and toes.']
[yamap_label coord='55.657793,37.249445' description='(lt)b(gt)WordPress(lt)/b(gt) started in 2003 (lt)img src(equiv)(quot)https://самопревосхождение.рф/images/1-tower.ico(quot)(gt)' url='https://самопревосхождение.рф/' header_txt='(lt)b(gt)WordPress(lt)/b(gt) started in 2003 (lt)img src(equiv)(quot)https://самопревосхождение.рф/images/1-tower.ico(quot)(gt)' header_url='https://самопревосхождение.рф' footer_txt='Patriot, Hanter, Buhanka, Golovastik (lt)img src(equiv)(quot)https://самопревосхождение.рф/images/1-tower.ico(quot)(gt)' footer_url='https://самопревосхождение.рф' icon='https://самопревосхождение.рф/images/1-tower.ico' iconsize='16,16' iconoffset='-8,-8']
[/yandexMap]