I've been running Facebook ads profitably for sometime now. With a decent CTR I've been able to get clicks pretty cheap (7-20 cents).
All of a sudden I noticed my traffic drop massively on one of my most profitable campaigns. On further inspection I noticed Facebook is now giving me a minimum suggested bid of around 40-50 cents.
Any ideas as to why this is happening and how to start getting my cheap traffic again?
Thanks in advance.