Hello   I send the Modify a contact with a specific Contact ID API v2 endpoints. It works. I am able to modify the contact. Specifically I am adding a campaign to the list in the contact. After I modify the list with the API I can see the contact changing.   Now I want to use the API from my web site. So, I try and copy and paste everything possible and try and execute it. I have successfully executed an API to add a new contact.   The URL for the add contact is https://api.constantcontact.com/v2/contacts?action_by=ACTION_BY_VISITOR&api_key=$apiKey. This is the working API.   The URL for the Modify a contact with a specific Contact ID is https://api.constantcontact.com/v2/contacts/$contactId?action_by=ACTION_BY_OWNER&api_key=$apiKey is the URL where it doesn't.   I use a php/curl program in my web site. I traced the curl execution. That is where the HTTP/1.1 405 Method Not Allowed was discovered. What I think after the reading the curl trace is that data is sent to Constant Contact. The trace shows 1381 bytes received at Constant Contact. Then the Curl trace shows We are completely uploaded and fine assuming that the 1381 bytes is ok. I think Constant Contact got the data and didn't like it. Any ideas, seen this before?   I sent the actual API's and trace data to Webservices. ... View more