Upgrade from J1.7 to J2.5 fails to show markers in the frontend, from any category.

New J2.5 db contains NEW tables
j25_hotspots_settings
j25_hotspots_marker
j25_hotspots_categorie
which were copied from respective OLD J1.7 tables jos_*.*

Site: http://www.kalamies.com
Direct link to Hotspots: http://www.kalamies.com/kalastus-kartta

Related topic & post on forum: https://compojoom.com/forum/46-installation-questions/14976-update-to-joomla-2-5#18106 (as the task was really a simple one, one can only wonder how on earth the markers are not showing!)

Most of not all the markers are based in Finland.

Backend shows:
Total Nr. of Hotspots 642
Published Hotspots 634
Unpublished Hotspots 8

Backend seems to be reading the table just fine. Cache has been cleared a number of times. Front end just doesn't show them.

Please advice.