Daarii

Hi all, I’m having trouble removing the coolant reservoir. There seems to be two tabs/slots: one on the side and one on the back. The one on the side can be easily pulled out but I’m having so much trouble removing the one on the back. Or maybe I’m not pulling it out correctly? I wanna see if there’s a crack on the reservoir. I tried topping it off and coolant spilled on the ground at the halfway mark of Min-Max