Point labels not displayed in IMG maps

Hello,

I have been making some maps with Locus and Orux in South Korea.

I created a vector image map attached, and displayed it on Locus and Orux.

As you can see the following, the point labels in the circles on the map are displayed in Orux, however, not in Locus.

But, the line labels in the box are displayed good in Locus.

What is the problem?

I need the solutions.

I appreciate your soonest reply.

Thank you.