Board Game Arena

I have a Move/Build tile with six markers on it. When I click on it to take an action, it only prompts me to Move. But I want to Build instead because I'm already in position to build a structure. But I can't figure out how to actually Build the structure in question because the system is not prompting me for that option. I'm assuming there must be something about the interface I am not understading, but if someone thinks this is a bug instead, I will move this post to that forum.

https://boardgamearena.com/3/crusaderst ... =279484427

If you're in a legal position to build, then it should offer you the choice of Travel and Build. Are you sure your knight was in a hex with no enemy and no building already?