Why does a PayPal payment fail with the message «Payment Gateway is unreachable at the moment»?

As you can see, an internal exception is logged, you can find it in the var/log/exception.log file.

See also:

Enable SSL verification at payment settings. Same issue was cleared for me after this

I’ve stuck here with the same problem. I change de SSL configuration bu stil not working.

Read carefully the last sentence of the first post.

About getting the exception log? I did. And even disabling the Enable SSL verification option it does not works. Any clue?

Publish here the error message from the exception log.