Cannot download plugins , credentials not accepted , but I can log in splunk.com with the same credentials

[jvarcaba]

I am following snort + splunk installation tutorial - find it here

Everything regarding splunk went as expected(installed and was able to login ), except the part where i have to add plugin.
The problem is that after asking for splunk.com credentials to install the particular plugin mentioned in tutorial, it returns that I have entered wrong credentials , but they work just fine cuz I can login in splunk.com
I am using a VM on google cloud. Could it be due to closed ports ?
Thanks

[richgalloway]

Could you be more specific about where in the installation you have the problem? The link provided is to a 40-page document so it's difficult to know where the problem is.

[jvarcaba]

I can not add plugins to my splunk.
I can log in, i can browse apps section, i can find Snort 3 JSON Alerts plugin, but I cannot install it - after I click "install" it asks for splunk.com credentials , I enter them ,but it keeps saying that they are incorrect , but they cannot be - I can log on to splunk.com if I open the page separately.

[richgalloway]

That doesn't answer my question.
Have you tried signing in to splunkbase directly, downloading the app to your workstation, and then using the "Install app from file" option?