​@alivadas Have you seen the specific installation instructions for Pipedrive? I think this could help:
https://appconnect.labs.ringcentral.com/crm/pipedrive/

The key is the following:

• You first need to install the Chrome extension
• Then you need to connect App Connect to Pipedrive by clicking the “Connect” button in the settings area of App Connect

The rest should be self-explanatory. Try again and if you continue to have problems let me know in this thread and I can help. 

​@alivadas FYI - I moved this question to the App Connect group in our forums. Feel free to explore the group to find other news and information about App Connect!

​@alivadas Have you successfully connected to Pipedrive yet?