Hey guys, we've been running ads for nearly a month with a good CPL that varies between £2-4 per lead. For the last couple of days the CPL increased to £9. We left the ads 2 days but nothing changed. Would this be ad fatigue or could FB be testing a new audience? I don't want to tweak anything so we don't enter the learning phase again. But the question is, how do you know if it's ad fatigue or not? I am a bit confused as the frequency is not that high and the CTR is good enough. I saw that we got a good amount of clicks but only 4 leads converted from them. Could this be a lead form problem? Thanks! Note: this metrics is only for the 12th march - 14th march