ARM's Server "internal error" for license

Hello,

I try to evaluate DS-5 ( 30-day license).

But I keep getting, and nothing helps:

In some tries I get:

           >>> Unable to execute remote query (response code 502).

In other tries:

     >>>> internal server error

and in other also:

      >>>>  Unable to execute API call /api/v1/connect

and also got:

   >>>            >>> Unable to execute remote query (response code 503).

Please help....

ran