Same here. Built a page from zero to 1.8 million and the engagement is horrible.
Facebook thinks that: the more fans/customers you have, the more money you have to spend on ads. because, apperantly, you’re a big company.
Kinda true, but they forget that I already paid a lot to built the fanbase and advertised a lot to reach new fans.
Now that these people liked our page, I need to pay Facebook again to reach the same people. Seems really unfair to me.