Used to work well now it's terrible

I’ve contacted them 3 times so far and I keep getting emails back saying they have no idea what is wrong. Anways I send them aroun d 30k+ credits per day and on some days way more then that. I used to have no problem getting that many credits in return every day and my account was pretty much even. A few weeks ago something changed and now I send them 30k or so and they send me 1-2k credits per day. My account currently has 319,750 credits in it and it keeps growing every day. I went from getting hundreds of installs eveyday to getting 1-3 installs per day.

Is anyone else seeing a huge drop off over the past few weeks?

I contacted them and never received an email back. I have my setting set to 100% monitization yet they still send some of my traffic to the tap exchange.  

I contacted them and never received an email back. I have my setting set to 100% monitization yet they still send some of my traffic to the tap exchange.