Will the Princess or King not walk into a portal?
Maybe it's not their portal!
For most of Roterra 3: A Sovereign Twist, the player uses only one character at a time. However, some of the more difficult puzzles use multiple characters! When playing with both main characters: Princess Angelica and King Orlando, the player will often be shown colored portals.
Below, you can see that the Princess' personal portal is Pink and Orlando's personal portal is Red! These portals will only allow their designated characters to enter.