Booking plugin-The service is currently not available, please try again later.

That’s strange. Can you check nothing is blocking outgoing HTTP requests on your server?

I tried with another HTTP link and it works.

I suggest you open a support ticket with us and include your API key so we can check this.

The API-key is the following

[removed]

I have not the Pro version, so I think I cannot open tickets.

You can still open tickets: https://www.zingiri.com/go/submitticket.php?step=2&deptid=1

And please remove the API key from this forum as it should remain private.

I opened the ticket as you suggested and I’m trying to modify the post for the API-KEY through a WordPress moderator

Even if you open tickets they will ignore you!