Stuck in Episode 3 Mission 4

[zimudec]

I've been able to complete all the missions in all the episodes. But when I get to Episode 3 Mission 4, a door won't open:

https://youtu.be/jeS2ZfI5K24?si=HGLb_9JhKmoAN7Jw&t=90

There are also issues with a teleporter in the same mission. Once you enter, it's practically impossible to return.