Polish quest description, translated to English, reads:
When the hero is adjacent to Iron Bounds he can test Might or Knowledge. If the test is success he picks them up and puts the token on his hero sheet.
So... It doesn't say it's an action. It doesn't limit it to once per turn. So unless the Polish version is missing something heroes can just do the test over and over again without limit until they succeed.
The core rulebook says this:
Figures may pick up these objective tokens by performing a special
action while adjacent to or in the same space as the objective token.
I ruled heroes must spend an action to try picking it up. Was it right?