Hi Alex,
I’m using mac with Studio 11.1, have similar problem, but I can see few main add-ons:
Above 2 commands I executed in cmd line, both output positive response, cuba-platform.com is accessible in China, just a bit slow:
curl -v https://www.cuba-platform.com
* Rebuilt URL to: https://www.cuba-platform.com/
* Trying 46.165.220.112...
* TCP_NODELAY set
* Connected to www.cuba-platform.com (46.165.220.112) port 443 (#0)
...
openssl s_client -showcerts -connect www.cuba-platform.com:443
CONNECTED(00000005)
depth=2 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = DigiCert Global Root CA
verify return:1
depth=1 C = US, O = DigiCert Inc, OU = www.digicert.com, CN = Thawte RSA CA 2018
verify return:1
depth=0 C = RU, ST = Samarskaya obl., L = Samara, O = OOO Haulmont Samara, OU = IT DEpartment, CN = *.cuba-platform.ru
verify return:1
Here is part of my IDEA log:
2019-08-22 00:24:02,046 [ 38887] INFO - .backend.ExternalConfigManager - [external_req] Load config http://files.cuba-platform.com/cuba/studio/studio-config.json
2019-08-22 00:24:03,052 [ 39893] INFO - org.eclipse.jetty.util.log - Logging initialized @43063ms
2019-08-22 00:24:03,135 [ 39976] INFO - rg.eclipse.jetty.server.Server - jetty-9.2.20.v20161216
2019-08-22 00:24:03,186 [ 40027] INFO - pp.StandardDescriptorProcessor - NO JSP Support for /studio, did not find org.eclipse.jetty.jsp.JettyJspServlet
2019-08-22 00:24:03,337 [ 40178] INFO - .server.handler.ContextHandler - Started o.e.j.w.WebAppContext@61c871ee{/studio,file:/Users/bryan/Library/Caches/CubaStudio2019.1/,AVAILABLE}
2019-08-22 00:24:03,351 [ 40192] INFO - e.jetty.server.ServerConnector - Started ServerConnector@2bb0afe1{HTTP/1.1}{0.0.0.0:30200}
2019-08-22 00:24:03,351 [ 40192] INFO - rg.eclipse.jetty.server.Server - Started @43364ms
2019-08-22 00:24:04,185 [ 41026] INFO - onents.HTTPDescriptorsProvider - Using cached /Users/bryan/Library/Caches/CubaStudio2019.1/cuba-studio/marketplace/available_app_components.json (updated at 2019-08-22 00:16)
2019-08-22 00:24:06,319 [ 43160] INFO - onents.HTTPDescriptorsProvider - Using cached /Users/bryan/Library/Caches/CubaStudio2019.1/cuba-studio/marketplace/marketplace_view.json (updated at 2019-08-22 00:16)
2019-08-22 00:24:06,379 [ 43220] INFO - ponents.util.AppComponentUtils - Could not get latest version for component 'Simplified Chinese Translation '
It says using cached available_app_components.json, this file looks good:
available_app_components.json (76.5 KB)
Hope this could help you figure out the cause.