Gate stuck after opening.

[rixman]

Hello, everybody, this is my first post here, hope someone can help me.

I just moved to a new place, and this house has an old nice gate, that looks like this:

The remote looks like that:

So the gate worked fine the first 2 days, but today it opened in the morning, closed after leaving, and opened again when coming back home, but now won´t close again. The remote light blinks, and when standing next to this blue rectangular box, when I press the button I hear a very quiet clicking, so something is happening. But the gate won't move at all anymore. (maybe it helps, but it also rained all day today, but it also rained yesterday, and it worked fine) Downloaded a Nice hyppo manual, and that said I can manually close it with some key, but I don´t have any key, just 2 remotes. I also have a dog, so gate that is stuck open, is rather problematic for me.