Hi,
if you have the problem while running the report to retrieve the page access token, your user token might be invalid/expired or your proxy is not correct. You could refresh the user token and try again, For me it solved the "Bad request" issue.
If you have the correct page access token and you get the problem while running the report crm_soc_smc_harvest to retrieve the posts/comments/messages you might have a problem with the URLs in methods get_post, get_comments, get_direct_msg in your connector class. I think, I changed at least the URL for the comments. You could use the Graph API Explorer on Facebook with your page access token to play around with the URLs.
Best,
Simon