Download maps from the maps4heroes.com website.

Good afternoon. When I try to download a map from the maps4heroes.com website, I get the message "to download the map, using the disable on maps4heroes.com option in adblock and reload page". This appears in all browsers. I have never enabled or disabled any ad blockers, nor have I installed the Adblock program. What do I need to do to be able to download the map?