Problems with ADWEBER integration

[jungbub]

When i try to authenticate my ADWEBER widget, i receive an error due to failed connection with the API (it works on other websites of mine) . ADWEBER support says that altervista does not communicate with their API properly
Weber Web Form gives me this error after attempting authentication:

Unable to connect to your AWeber Account

Error Message
Unable to connect to the AWeber API. (56 - Received


can anyone help me?

(API info api.aweber.com

https://help.aweber.com/hc/en-us/art...he-AWeber-API-

[alemoppo]

Try to unlock the "server to server" connection, from here.

Bye!

[jungbub]

I dit that right now, and i was sure that i'll work,
but even with the server to server without restriction
i get the same error
Unable to connect to your AWeber Account

Error Message
Unable to connect to the AWeber API. (56 - Received

[alemoppo]

Server to server connections are only possible on ports 80 and 443 even if the whitelist is unlocked.

Which ports does the script use? I can't find this information on their site.

Bye!